Move T_defs_pcu from BTS to PCU object

Change-Id: I0cac5c12dff2e90b52d00383a00b4b94a9603a0a
diff --git a/src/gprs_pcu.h b/src/gprs_pcu.h
index bf65fa7..9696e96 100644
--- a/src/gprs_pcu.h
+++ b/src/gprs_pcu.h
@@ -86,6 +86,8 @@
 	alloc_algorithm_func_t alloc_algorithm;
 
 	struct gprs_bssgp_pcu bssgp;
+
+	struct osmo_tdef *T_defs; /* timers controlled by PCU */
 };