BSSGP: add function to reset all PTP BVC

Change-Id: I9bf8f4dd784ccddbb9926492a85fff3293a0e913
Related: OS#1638
diff --git a/include/osmocom/gprs/gprs_bssgp_bss.h b/include/osmocom/gprs/gprs_bssgp_bss.h
index 9374e73..74211fd 100644
--- a/include/osmocom/gprs/gprs_bssgp_bss.h
+++ b/include/osmocom/gprs/gprs_bssgp_bss.h
@@ -26,7 +26,7 @@
 #include <osmocom/gprs/gprs_bssgp.h>
 
 uint8_t *bssgp_msgb_tlli_put(struct msgb *msg, uint32_t tlli);
-
+int bssgp_tx_bvc_ptp_reset(uint16_t nsei, enum gprs_bssgp_cause cause);
 int bssgp_tx_suspend(uint16_t nsei, uint32_t tlli,
 		     const struct gprs_ra_id *ra_id);