split off osmo-sgsn: remove files, apply build

Change-Id: I5d27ff93e56cd13e0e70edd15e2080201e35e91f
diff --git a/src/gprs/gb_proxy_peer.c b/src/gprs/gb_proxy_peer.c
index 8909687..a83630b 100644
--- a/src/gprs/gb_proxy_peer.c
+++ b/src/gprs/gb_proxy_peer.c
@@ -22,17 +22,18 @@
 
 #include <openbsc/gb_proxy.h>
 
-#include <openbsc/gsm_data.h>
-#include <openbsc/gsm_data_shared.h>
 #include <openbsc/debug.h>
 
 #include <osmocom/gprs/protocol/gsm_08_18.h>
 #include <osmocom/core/rate_ctr.h>
 #include <osmocom/core/stats.h>
 #include <osmocom/core/talloc.h>
+#include <osmocom/gsm/tlv.h>
 
 #include <string.h>
 
+extern void *tall_bsc_ctx;
+
 static const struct rate_ctr_desc peer_ctr_description[] = {
 	{ "blocked",	   "BVC Block                       " },
 	{ "unblocked",	   "BVC Unblock                     " },