logging fixup: shorter names for LOGGING_FILTER_* and LOGGING_CTX_*

In libosmocore, my patch was merged to master a bit too soon. To accomodate the
request for naming that matches the general "LOG" prefix instead of "LOGGING",
a fixup was committed to libosmocore. Adjust for that.

Original patch: change-id I5c343630020f4b108099696fd96c2111614c8067
The fixup: change-id I424fe3f12ea620338902b2bb8230544bde3f1a93

Change-Id: Ib2ec5e4884aa90f48051ee2f832af557aa525991
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c
index 58fdaa3..1cae832 100644
--- a/openbsc/src/libbsc/abis_rsl.c
+++ b/openbsc/src/libbsc/abis_rsl.c
@@ -159,7 +159,7 @@
 		     gsm_ts_and_pchan_name(lchan->ts), log_name, chan_nr);
 
 	if (lchan->conn)
-		log_set_context(LOGGING_CTX_VLR_SUBSCR, lchan->conn->subscr);
+		log_set_context(LOG_CTX_VLR_SUBSCR, lchan->conn->subscr);
 
 	return lchan;
 }
diff --git a/openbsc/src/libbsc/paging.c b/openbsc/src/libbsc/paging.c
index 816d7a6..eb37a33 100644
--- a/openbsc/src/libbsc/paging.c
+++ b/openbsc/src/libbsc/paging.c
@@ -77,7 +77,7 @@
 	if (!bts->oml_link)
 		return;
 
-	log_set_context(LOGGING_CTX_VLR_SUBSCR, request->subscr);
+	log_set_context(LOG_CTX_VLR_SUBSCR, request->subscr);
 
 	LOGP(DPAG, LOGL_INFO, "Going to send paging commands: imsi: %s tmsi: "
 	     "0x%x for ch. type %d (attempt %d)\n", request->subscr->imsi,
@@ -91,7 +91,7 @@
 	page_group = gsm0502_calc_paging_group(&bts->si_common.chan_desc,
 						str_to_imsi(request->subscr->imsi));
 	gsm0808_page(bts, page_group, mi_len, mi, request->chan_type);
-	log_set_context(LOGGING_CTX_VLR_SUBSCR, NULL);
+	log_set_context(LOG_CTX_VLR_SUBSCR, NULL);
 }
 
 static void paging_schedule_if_needed(struct gsm_bts_paging_state *paging_bts)
@@ -255,7 +255,7 @@
 	gsm_cbfn *cbfn;
 	int msg;
 
-	log_set_context(LOGGING_CTX_VLR_SUBSCR, req->subscr);
+	log_set_context(LOG_CTX_VLR_SUBSCR, req->subscr);
 
 	LOGP(DPAG, LOGL_INFO, "T3113 expired for request %p (%s)\n",
 		req, req->subscr->imsi);
@@ -394,7 +394,7 @@
 {
 	struct gsm_bts *bts;
 
-	log_set_context(LOGGING_CTX_VLR_SUBSCR, subscr);
+	log_set_context(LOG_CTX_VLR_SUBSCR, subscr);
 
 	/* Stop this first and dispatch the request */
 	if (_bts)