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_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index cc9d297..0ed7162 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -38,6 +38,8 @@
#include <osmocom/core/talloc.h>
#include <osmocom/core/rate_ctr.h>
+#include <osmocom/gprs/gprs_bssgp.h>
+
#include <openbsc/debug.h>
#include <openbsc/gsm_data.h>
#include <openbsc/gsm_subscriber.h>
@@ -45,7 +47,6 @@
#include <openbsc/gsm_04_08_gprs.h>
#include <openbsc/paging.h>
#include <openbsc/transaction.h>
-#include <openbsc/gprs_bssgp.h>
#include <openbsc/gprs_llc.h>
#include <openbsc/gprs_sgsn.h>
#include <openbsc/gprs_gmm.h>