ctrl: add optional port to bind command

So far ctrl interface did not allow to specify port to bind to.
Let's fix this and make it consistent with the way vty bind works.

N. B: the functions which ignore port configured via vty are marked as deprecated,
the sw which uses them should be ported to either newly added ctrl_init_default()
or simplified ctrl_interface_setup()

The similar change for vty interface will be addressed via separate patch series.

Related: OS#5809
Change-Id: I0fd87fd41fd3ac975273968d24f477daa3cd3aa9
diff --git a/utils/osmo-ns-dummy.c b/utils/osmo-ns-dummy.c
index a85775e..e2662a2 100644
--- a/utils/osmo-ns-dummy.c
+++ b/utils/osmo-ns-dummy.c
@@ -280,7 +280,7 @@
 	}
 
 	if (ctrl_port > 0) {
-		ctrl = ctrl_interface_setup_dynip(NULL, ctrl_vty_get_bind_addr(), ctrl_port, NULL);
+		ctrl = ctrl_interface_setup(NULL, ctrl_port, NULL);
 		if (!ctrl) {
 			fprintf(stderr, "Failed to initialize control interface. Exiting.\n");
 			exit(1);