gbproxy: Log FSM timeouts

Change-Id: I5c48e42083ab6f8622808457ca3f017adf35cdff
diff --git a/src/gbproxy/gb_proxy.c b/src/gbproxy/gb_proxy.c
index 8be67f7..ecb74c0 100644
--- a/src/gbproxy/gb_proxy.c
+++ b/src/gbproxy/gb_proxy.c
@@ -989,6 +989,7 @@
 		return -1;
 	}
 	osmo_clock_gettime(CLOCK_REALTIME, &tp);
+	osmo_fsm_log_timeouts(true);
 
 	return 0;
 }