gprs_ns2: rename gprs_ns2_ip_vc_sockaddr -> gprs_ns2_ip_vc_remote

It's more clear which part of the address is returned.
In preparation to add a gprs_ns2_ip_vc_local.

Change-Id: I6110ff573362961c713a990da7ef3f3dbedf6c57
diff --git a/src/gb/gprs_ns2.c b/src/gb/gprs_ns2.c
index 43a3d77..002ea1d 100644
--- a/src/gb/gprs_ns2.c
+++ b/src/gb/gprs_ns2.c
@@ -226,7 +226,7 @@
 		}
 
 		local = gprs_ns2_ip_bind_sockaddr(nsvc->bind);
-		remote = gprs_ns2_ip_vc_sockaddr(nsvc);
+		remote = gprs_ns2_ip_vc_remote(nsvc);
 		if (osmo_sockaddr_str_from_sockaddr(&local_str, &local->u.sas))
 			strcpy(local_str.ip, "invalid");
 		if (osmo_sockaddr_str_from_sockaddr(&remote_str, &remote->u.sas))
@@ -853,7 +853,7 @@
 	OSMO_ASSERT(sockaddr);
 
 	llist_for_each_entry(nsvc, &nse->nsvc, list) {
-		remote = gprs_ns2_ip_vc_sockaddr(nsvc);
+		remote = gprs_ns2_ip_vc_remote(nsvc);
 		if (!osmo_sockaddr_cmp(sockaddr, remote))
 			return nsvc;
 	}