Fix compiler warning

Move function declarations which use gprs_rlcmac_ul_tbf into tbf.h to
avoid compiler warning:

In file included from pcu_vty.c:15:0:
bts.h:166:27: warning: ‘struct gprs_rlcmac_ul_tbf’ declared inside parameter list will not be visible outside of this definition or declaration
 void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta);
                           ^~~~~~~~~~~~~~~~~~
bts.h:167:24: warning: ‘struct gprs_rlcmac_ul_tbf’ declared inside parameter list will not be visible outside of this definition or declaration
 void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta);
                        ^~~~~~~~~~~~~~~~~~

Change-Id: Ic34c72c8bff6d7c775f56bb6026fec5425f7dcb4

1 files changed, 9 insertions, 0 deletions

diff --git a/src/tbf.h b/src/tbf.h
index 95e1e892..e9d8df8e 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -562,6 +562,15 @@ protected:
 	void maybe_schedule_uplink_acknack(const gprs_rlc_data_info *rlc);
 };
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+void update_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, int8_t ta_delta);
+void set_tbf_ta(struct gprs_rlcmac_ul_tbf *tbf, uint8_t ta);
+#ifdef __cplusplus
+}
+#endif
+
 inline enum gprs_rlcmac_tbf_direction reverse(enum gprs_rlcmac_tbf_direction dir)
 {
 	return (enum gprs_rlcmac_tbf_direction)