cosmetic: bsc_network_init(): imply default 001-01 PLMN

All callers pass mcc=1, mnc=1, so just have it as default.
(Prepare for net->country_code etc to be replaced by net->plmn)

Change-Id: Ic16bc0bab3f2d4721e86a1a04f9d9f988d777df2
diff --git a/tests/bssap/bssap_test.c b/tests/bssap/bssap_test.c
index ad8974f..cf60e38 100644
--- a/tests/bssap/bssap_test.c
+++ b/tests/bssap/bssap_test.c
@@ -89,7 +89,7 @@
 	struct bsc_msc_data *msc;
 	struct gsm_bts *bts;
 
-	bsc_gsmnet = bsc_network_init(NULL, 1, 1);
+	bsc_gsmnet = bsc_network_init(NULL);
 	bsc_gsmnet->bsc_data->rf_ctrl = talloc_zero(NULL, struct osmo_bsc_rf);
 	bsc_gsmnet->bsc_data->rf_ctrl->policy = S_RF_ON;