Move ns_dialect field from BTS to PCU

Change-Id: Iffb22b776b91f93d6d2a7ccfa47deeecc22c33f0
diff --git a/src/gprs_pcu.c b/src/gprs_pcu.c
index cfe8896..01ead33 100644
--- a/src/gprs_pcu.c
+++ b/src/gprs_pcu.c
@@ -89,6 +89,7 @@
 	pcu->vty.mcs_lqual_ranges[7].high = 24;
 	pcu->vty.mcs_lqual_ranges[8].low = 23;
 	pcu->vty.mcs_lqual_ranges[8].high = 256;
+	pcu->vty.ns_dialect = NS2_DIALECT_IPACCESS;
 
 	pcu->T_defs = T_defs_pcu;
 	osmo_tdefs_reset(pcu->T_defs);