rsl: Use LOGL_ERROR instead of LOGL_NOTICE act/deact timeouts

It is a grave error when the BTS does not respond to the ACT/DEACT
requests, use LOGL_ERROR for such conditions.
diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c
index b703c03..d365a97 100644
--- a/openbsc/src/libbsc/abis_rsl.c
+++ b/openbsc/src/libbsc/abis_rsl.c
@@ -182,7 +182,7 @@
 {
 	struct gsm_lchan *lchan = data;
 
-	LOGP(DRSL, LOGL_NOTICE, "%s Timeout during activation!\n",
+	LOGP(DRSL, LOGL_ERROR, "%s Timeout during activation!\n",
 		gsm_lchan_name(lchan));
 
 	rsl_lchan_set_state(lchan, LCHAN_S_NONE);
@@ -193,7 +193,7 @@
 {
 	struct gsm_lchan *lchan = data;
 
-	LOGP(DRSL, LOGL_NOTICE, "%s Timeout during deactivation!\n",
+	LOGP(DRSL, LOGL_ERROR, "%s Timeout during deactivation!\n",
 		gsm_lchan_name(lchan));
 
 	if (lchan->state != LCHAN_S_REL_ERR)