libgb: Use library SS_L_NS instead lf local SS_NS
which removes some further dependencies of libgb to openbsc internal
code and data.
diff --git a/openbsc/src/gprs/gb_proxy.c b/openbsc/src/gprs/gb_proxy.c
index 518382d..87cfa61 100644
--- a/openbsc/src/gprs/gb_proxy.c
+++ b/openbsc/src/gprs/gb_proxy.c
@@ -596,7 +596,7 @@
struct gprs_nsvc *nsvc = nssd->nsvc;
struct gbprox_peer *peer;
- if (subsys != SS_NS)
+ if (subsys != SS_L_NS)
return 0;
if (signal == S_NS_RESET && nsvc->nsei == gbcfg.nsip_sgsn_nsei) {