bsc_hack.c: Unconditionally listen for the nanoBTS

As proposed on the mailinglist, initialize the socket once
and wait for the nanoBTS to connect.

openbsc/src/bsc_hack.c

@@ -1031,15 +1031,16 @@ static int bootstrap_network(void)
 
 	llist_for_each_entry(bts, &gsmnet->bts_list, list) { 
 		bootstrap_bts(bts);
-		if (is_ipaccess_bts(bts))
-			rc = ipaccess_setup(bts);
-		else
+		if (!is_ipaccess_bts(bts))
 			rc = e1_reconfig_bts(bts);
 
 		if (rc < 0)
 			exit (1);
 	}
 
+	/* initialize nanoBTS support omce */
+	rc = ipaccess_setup(gsmnet);
+
 	return 0;
 }