vty: add SCCP related vty commands

Depends: I214ea51fc6bfa2a9a4dd7c34b43add0c77ffe22e (libosmo-sccp)
Change-Id: Ie267aa014812b5c89f2268a65566d5427aa1ad7e
diff --git a/src/gprs/sgsn_main.c b/src/gprs/sgsn_main.c
index feffefb..11ed5d3 100644
--- a/src/gprs/sgsn_main.c
+++ b/src/gprs/sgsn_main.c
@@ -400,6 +400,7 @@
 #if BUILD_IU
 	osmo_ss7_init();
 	osmo_ss7_vty_init_asp(tall_bsc_ctx);
+	osmo_sccp_vty_init();
 #endif
 
 	handle_options(argc, argv);