store all APDU's received from the MS in the database

This helps us to analyze data such as RRLP location information for
later analysis.
diff --git a/openbsc/src/gsm_04_08.c b/openbsc/src/gsm_04_08.c
index 9d9cde7..b64d253 100644
--- a/openbsc/src/gsm_04_08.c
+++ b/openbsc/src/gsm_04_08.c
@@ -1839,7 +1839,7 @@
 	DEBUGP(DNM, "RX APPLICATION INFO id/flags=0x%02x apdu_len=%u apdu=%s",
 		apdu_id_flags, apdu_len, hexdump(apdu_data, apdu_len));
 
-	return 0;
+	return db_apdu_blob_store(msg->lchan->subscr, apdu_id_flags, apdu_len, apdu_data);
 }