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/src/gsm/tlv_parser.c b/src/gsm/tlv_parser.c
index d7604c6..d9072c9 100644
--- a/src/gsm/tlv_parser.c
+++ b/src/gsm/tlv_parser.c
@@ -25,7 +25,7 @@
 
 /*! \addtogroup tlv
  *  @{
- *  \brief Osmocom TLV Parser
+ *  Osmocom TLV Parser
  *
  *  The Osmocom TLV parser is intended to operate as a low-level C
  *  implementation without dynamic memory allocations.  Basically, it
@@ -46,7 +46,7 @@
 struct tlv_definition tvlv_att_def;
 struct tlv_definition vtvlv_gan_att_def;
 
-/*! \brief Dump pasred TLV structure to stdout */
+/*! Dump pasred TLV structure to stdout */
 int tlv_dump(struct tlv_parsed *dec)
 {
 	int i;
@@ -59,7 +59,7 @@
 	return 0;
 }
 
-/*! \brief Copy \ref tlv_parsed using given talloc context
+/*! Copy \ref tlv_parsed using given talloc context
  *  \param[in] tp_orig Parsed TLV structure
  *  \param[in] ctx Talloc context for allocations
  *  \returns NULL on errors, \ref tlv_parsed pointer otherwise
@@ -94,7 +94,7 @@
 	return tp_out;
 }
 
-/*! \brief Merge all \ref tlv_parsed attributes of 'src' into 'dst'
+/*! Merge all \ref tlv_parsed attributes of 'src' into 'dst'
  *  \param[in] dst Parsed TLV structure to merge into
  *  \param[in] src Parsed TLV structure to merge from
  *  \returns 0 on success, negative on error
@@ -118,7 +118,7 @@
 	return 0;
 }
 
-/*! \brief Parse a single TLV encoded IE
+/*! Parse a single TLV encoded IE
  *  \param[out] o_tag the tag of the IE that was found
  *  \param[out] o_len length of the IE that was found
  *  \param[out] o_val pointer to the data of the IE that was found
@@ -218,7 +218,7 @@
 	return len;
 }
 
-/*! \brief Parse an entire buffer of TLV encoded Information Elements
+/*! Parse an entire buffer of TLV encoded Information Elements
  *  \param[out] dec caller-allocated pointer to \ref tlv_parsed
  *  \param[in] def structure defining the valid TLV tags / configurations
  *  \param[in] buf the input data buffer to be parsed
@@ -277,7 +277,7 @@
 	return num_parsed;
 }
 
-/*! \brief take a master (src) tlvdev and fill up all empty slots in 'dst'
+/*! take a master (src) tlvdev and fill up all empty slots in 'dst'
  *  \param dst TLV parser definition that is to be patched
  *  \param[in] src TLV parser definition whose content is patched into \a dst */
 void tlv_def_patch(struct tlv_definition *dst, const struct tlv_definition *src)