pdch_ulc: Log POLL reason upon timeout

Change-Id: I7cd59b60fe0af0bfdfcdf8a91e4cf8bd3f25b2f7
diff --git a/src/pdch_ul_controller.c b/src/pdch_ul_controller.c
index e7a721c..79a0339 100644
--- a/src/pdch_ul_controller.c
+++ b/src/pdch_ul_controller.c
@@ -325,8 +325,9 @@
 			break;
 		case PDCH_ULC_NODE_TBF_POLL:
 			LOGPDCH(ulc->pdch, DRLCMAC, LOGL_NOTICE,
-				"Timeout for registered POLL (FN=%u): %s\n",
-				item->fn, tbf_name(item->tbf_poll.poll_tbf));
+				"Timeout for registered POLL (FN=%u, reason=%s): %s\n",
+				item->fn, get_value_string(pdch_ulc_tbf_poll_reason_names, item->tbf_poll.reason),
+				tbf_name(item->tbf_poll.poll_tbf));
 			tbf_poll_timeout(item->tbf_poll.poll_tbf, ulc->pdch, item->fn, item->tbf_poll.reason);
 			break;
 		case PDCH_ULC_NODE_SBA: