gprs_ns2: add signalling & data weights for UDP binds

Allow to assign a signalling and data weight to UDP binds.
Those weights will be used when doing dynamic configuration over
IP-SNS.
This is only the first part which only uses the assigned weights
when doing a new SNS configuration.
The outgoing change weight procedure will be supported in a later patch
when the SNS fsm supports outgoing procedures.

Related: SYS#5354
Change-Id: I5133e4229377d44772a9af28628a2bc420fea34b
diff --git a/src/gb/gprs_ns2.c b/src/gb/gprs_ns2.c
index ca47934..99a7415 100644
--- a/src/gb/gprs_ns2.c
+++ b/src/gb/gprs_ns2.c
@@ -1409,6 +1409,8 @@
 		return -ENOMEM;
 	}
 
+	bind->sns_sig_weight = 1;
+	bind->sns_data_weight = 1;
 	bind->nsi = nsi;
 	INIT_LLIST_HEAD(&bind->nsvc);
 	llist_add(&bind->list, &nsi->binding);