Decrease count_codecs logging verbosity

Use channel type name instead of number and log it with DEBUG facility
otherwise it produces lots of irrelevant messages for SDCCH*

Change-Id: I11b04e0cb02bf6ed01f6076cb31a56d8921d735e
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c
index 9656961..f672750 100644
--- a/openbsc/src/libbsc/abis_rsl.c
+++ b/openbsc/src/libbsc/abis_rsl.c
@@ -112,8 +112,8 @@
 			break;
 		}
 	} else {
-		LOGP(DRSL, LOGL_ERROR, "count_codecs unknown lchan->type %x on channel %s\n",
-		     lchan->type, gsm_ts_and_pchan_name(lchan->ts));
+		LOGP(DRSL, LOGL_DEBUG, "count_codecs unknown lchan->type %s on channel %s\n",
+		     gsm_lchant_name(lchan->type), gsm_ts_and_pchan_name(lchan->ts));
 	}
 }