BSC API: Make 'Got data in non active state' message as LOGL_INFO

LOGL_ERROR will make this message shpw up in everey default log
config.  However, as it seems, this is commonly observed in case
a MS still sends a MS STATUS (in respons to the MM INFO) at the
end of a location area update.

It might be best to actually change the channel release procedure
to make sure we can still pass such 'late' data to the MSC until
the time the Layer2 has been completely released.
diff --git a/openbsc/src/bsc_api.c b/openbsc/src/bsc_api.c
index 0a7c94b..267998f 100644
--- a/openbsc/src/bsc_api.c
+++ b/openbsc/src/bsc_api.c
@@ -477,7 +477,8 @@
 
 	lchan = msg->lchan;
 	if (lchan->state != LCHAN_S_ACTIVE) {
-		LOGP(DRSL, LOGL_ERROR, "Got data in non active state. discarding.\n");
+		LOGP(DRSL, LOGL_INFO, "Got data in non active state(%s), "
+		     "discarding.\n", gsm_lchans_name(lchan->state));
 		return -1;
 	}