doxygen: enable AUTOBRIEF, drop \brief

Especially for short descriptions, it is annoying to have to type \brief for
every single API doc.

Drop all \brief and enable the AUTOBRIEF feature of doxygen, which always takes
the first sentence of an API doc as the brief description.

Change-Id: I11a8a821b065a128108641a2a63fb5a2b1916e87
diff --git a/include/osmocom/gsm/lapd_core.h b/include/osmocom/gsm/lapd_core.h
index 42ef417..8d3a0f8 100644
--- a/include/osmocom/gsm/lapd_core.h
+++ b/include/osmocom/gsm/lapd_core.h
@@ -14,16 +14,16 @@
  * primitive related stuff
  */
 
-/*! \brief LAPD related primitives (L2<->L3 SAP)*/
+/*! LAPD related primitives (L2<->L3 SAP)*/
 enum osmo_dl_prim {
-	PRIM_DL_UNIT_DATA,	/*!< \brief DL-UNIT-DATA */
-	PRIM_DL_DATA,		/*!< \brief DL-DATA */
-	PRIM_DL_EST,		/*!< \brief DL-ESTABLISH */
-	PRIM_DL_REL,		/*!< \brief DL-RLEEASE */
-	PRIM_DL_SUSP,		/*!< \brief DL-SUSPEND */
-	PRIM_DL_RES,		/*!< \brief DL-RESUME */
-	PRIM_DL_RECON,		/*!< \brief DL-RECONNECT */
-	PRIM_MDL_ERROR,		/*!< \brief MDL-ERROR */
+	PRIM_DL_UNIT_DATA,	/*!< DL-UNIT-DATA */
+	PRIM_DL_DATA,		/*!< DL-DATA */
+	PRIM_DL_EST,		/*!< DL-ESTABLISH */
+	PRIM_DL_REL,		/*!< DL-RLEEASE */
+	PRIM_DL_SUSP,		/*!< DL-SUSPEND */
+	PRIM_DL_RES,		/*!< DL-RESUME */
+	PRIM_DL_RECON,		/*!< DL-RECONNECT */
+	PRIM_MDL_ERROR,		/*!< MDL-ERROR */
 };
 
 /* Uses the same values as RLL, so no conversion for GSM is required. */
@@ -43,32 +43,32 @@
 #define MDL_CAUSE_SABM_INFO_NOTALL	0x0e
 #define MDL_CAUSE_FRMR			0x0f
 
-/*! \brief for MDL-ERROR.ind */
+/*! for MDL-ERROR.ind */
 struct mdl_error_ind_param {
-	uint8_t cause;		/*!< \brief generic cause value */
+	uint8_t cause;		/*!< generic cause value */
 };
 
-/*! \brief for DL-REL.req */
+/*! for DL-REL.req */
 struct dl_rel_req_param {
-	uint8_t mode;		/*!< \brief release mode */
+	uint8_t mode;		/*!< release mode */
 };
 
-/*! \brief primitive header for LAPD DL-SAP primitives */
+/*! primitive header for LAPD DL-SAP primitives */
 struct osmo_dlsap_prim {
-	struct osmo_prim_hdr oph; /*!< \brief generic primitive header */
+	struct osmo_prim_hdr oph; /*!< generic primitive header */
 	union {
 		struct mdl_error_ind_param error_ind;
 		struct dl_rel_req_param rel_req;
-	} u;			/*!< \brief request-specific data */
+	} u;			/*!< request-specific data */
 };
 
-/*! \brief LAPD mode/role */
+/*! LAPD mode/role */
 enum lapd_mode {
-	LAPD_MODE_USER,		/*!< \brief behave like user */
-	LAPD_MODE_NETWORK,	/*!< \brief behave like network */
+	LAPD_MODE_USER,		/*!< behave like user */
+	LAPD_MODE_NETWORK,	/*!< behave like network */
 };
 
-/*! \brief LAPD state (Figure B.2/Q.921)*/
+/*! LAPD state (Figure B.2/Q.921)*/
 enum lapd_state {
 	LAPD_STATE_NULL = 0,
 	LAPD_STATE_TEI_UNASS,
@@ -81,7 +81,7 @@
 	LAPD_STATE_TIMER_RECOV,
 };
 
-/*! \brief LAPD message format (I / S / U) */
+/*! LAPD message format (I / S / U) */
 enum lapd_format {
 	LAPD_FORM_UKN = 0,
 	LAPD_FORM_I,
@@ -89,7 +89,7 @@
 	LAPD_FORM_U,
 };
 
-/*! \brief LAPD message context */
+/*! LAPD message context */
 struct lapd_msg_ctx {
 	struct lapd_datalink *dl;
 	int n201;
@@ -119,45 +119,45 @@
 	int	more; /* if message is fragmented */
 };
 
-/*! \brief LAPD datalink */
+/*! LAPD datalink */
 struct lapd_datalink {
 	int (*send_dlsap)(struct osmo_dlsap_prim *dp,
 	        struct lapd_msg_ctx *lctx);
 	int (*send_ph_data_req)(struct lapd_msg_ctx *lctx, struct msgb *msg);
 	int (*update_pending_frames)(struct lapd_msg_ctx *lctx);
 	struct {
-		/*! \brief filled-in once we set the lapd_mode above */
+		/*! filled-in once we set the lapd_mode above */
 		struct lapd_cr_ent loc2rem;
 		struct lapd_cr_ent rem2loc;
 	} cr;
-	enum lapd_mode mode; /*!< \brief current mode of link */
-	int use_sabme; /*!< \brief use SABME instead of SABM */
-	int reestablish; /*!< \brief enable reestablish support */
-	int n200, n200_est_rel; /*!< \brief number of retranmissions */
-	struct lapd_msg_ctx lctx; /*!< \brief LAPD context */
-	int maxf; /*!< \brief maximum frame size (after defragmentation) */ 
-	uint8_t k; /*!< \brief maximum number of unacknowledged frames */
-	uint8_t v_range; /*!< \brief range of sequence numbers */
-	uint8_t v_send;	/*!< \brief seq nr of next I frame to be transmitted */
-	uint8_t v_ack;	/*!< \brief last frame ACKed by peer */
-	uint8_t v_recv;	/*!< \brief seq nr of next I frame expected to be received */
-	uint32_t state; /*!< \brief LAPD state (\ref lapd_state) */
-	int seq_err_cond; /*!< \brief condition of sequence error */
-	uint8_t own_busy; /*!< \brief receiver busy on our side */
-	uint8_t peer_busy; /*!< \brief receiver busy on remote side */
-	int t200_sec, t200_usec; /*!< \brief retry timer (default 1 sec) */
-	int t203_sec, t203_usec; /*!< \brief retry timer (default 10 secs) */
-	struct osmo_timer_list t200; /*!< \brief T200 timer */
-	struct osmo_timer_list t203; /*!< \brief T203 timer */
-	uint8_t retrans_ctr; /*!< \brief re-transmission counter */
-	struct llist_head tx_queue; /*!< \brief frames to L1 */
-	struct llist_head send_queue; /*!< \brief frames from L3 */
-	struct msgb *send_buffer; /*!< \brief current frame transmitting */
-	int send_out; /*!< \brief how much was sent from send_buffer */
-	struct lapd_history *tx_hist; /*!< \brief tx history structure array */
-	uint8_t range_hist; /*!< \brief range of history buffer 2..2^n */
-	struct msgb *rcv_buffer; /*!< \brief buffer to assemble the received message */
-	struct msgb *cont_res; /*!< \brief buffer to store content resolution data on network side, to detect multiple phones on same channel */
+	enum lapd_mode mode; /*!< current mode of link */
+	int use_sabme; /*!< use SABME instead of SABM */
+	int reestablish; /*!< enable reestablish support */
+	int n200, n200_est_rel; /*!< number of retranmissions */
+	struct lapd_msg_ctx lctx; /*!< LAPD context */
+	int maxf; /*!< maximum frame size (after defragmentation) */ 
+	uint8_t k; /*!< maximum number of unacknowledged frames */
+	uint8_t v_range; /*!< range of sequence numbers */
+	uint8_t v_send;	/*!< seq nr of next I frame to be transmitted */
+	uint8_t v_ack;	/*!< last frame ACKed by peer */
+	uint8_t v_recv;	/*!< seq nr of next I frame expected to be received */
+	uint32_t state; /*!< LAPD state (\ref lapd_state) */
+	int seq_err_cond; /*!< condition of sequence error */
+	uint8_t own_busy; /*!< receiver busy on our side */
+	uint8_t peer_busy; /*!< receiver busy on remote side */
+	int t200_sec, t200_usec; /*!< retry timer (default 1 sec) */
+	int t203_sec, t203_usec; /*!< retry timer (default 10 secs) */
+	struct osmo_timer_list t200; /*!< T200 timer */
+	struct osmo_timer_list t203; /*!< T203 timer */
+	uint8_t retrans_ctr; /*!< re-transmission counter */
+	struct llist_head tx_queue; /*!< frames to L1 */
+	struct llist_head send_queue; /*!< frames from L3 */
+	struct msgb *send_buffer; /*!< current frame transmitting */
+	int send_out; /*!< how much was sent from send_buffer */
+	struct lapd_history *tx_hist; /*!< tx history structure array */
+	uint8_t range_hist; /*!< range of history buffer 2..2^n */
+	struct msgb *rcv_buffer; /*!< buffer to assemble the received message */
+	struct msgb *cont_res; /*!< buffer to store content resolution data on network side, to detect multiple phones on same channel */
 };
 
 void lapd_dl_init(struct lapd_datalink *dl, uint8_t k, uint8_t v_range,