osmo-bts-trx: change 'Received bad data' back to LOGL_DEBUG

In f2c902c2 I accidentally bumped the logging level for PDCH decoding
errors to LOGL_NOTICE, making osmo-bts-trx spam the logging with
hundreds of 'Received bad data' messsages.  Revert this.

Change-Id: Idb963f1a779dfa172825f6d481740cb0c4165485
Fixes: f2c902c2 "osmo-bts-trx: unify and enrich 'Received bad data' logging"
---
M src/osmo-bts-trx/sched_lchan_pdtch.c
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/osmo-bts-trx/sched_lchan_pdtch.c b/src/osmo-bts-trx/sched_lchan_pdtch.c
index 1720537..9f7c314 100644
--- a/src/osmo-bts-trx/sched_lchan_pdtch.c
+++ b/src/osmo-bts-trx/sched_lchan_pdtch.c
@@ -122,7 +122,7 @@
 	if (rc > 0) {
 		presence_info = PRES_INFO_BOTH;
 	} else {
-		LOGL1SB(DL1P, LOGL_NOTICE, l1ts, bi,
+		LOGL1SB(DL1P, LOGL_DEBUG, l1ts, bi,
 			BAD_DATA_MSG_FMT "\n", BAD_DATA_MSG_ARGS);
 		rc = 0;
 		presence_info = PRES_INFO_INVALID;

