split libgb into a separate library for outside use
This also removes the dependency to osmo_sock() inside libcommon and
replaces it with osmo_sock_* from libosmocore
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index 85f7105..d8da846 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -25,11 +25,12 @@
#include <osmocom/core/talloc.h>
#include <osmocom/core/timer.h>
#include <osmocom/core/rate_ctr.h>
+#include <osmocom/gprs/gprs_ns.h>
+#include <osmocom/gprs/gprs_bssgp.h>
+
#include <openbsc/gsm_subscriber.h>
#include <openbsc/debug.h>
#include <openbsc/gprs_sgsn.h>
-#include <openbsc/gprs_ns.h>
-#include <openbsc/gprs_bssgp.h>
#include <openbsc/sgsn.h>
#include <openbsc/gsm_04_08_gprs.h>
#include <openbsc/gprs_gmm.h>