qcacmn: Change default log level for serialization

Change default log level of serialization to QDF_TRACE_LEVEL_ERROR
Change error print to debug, when pending queue is empty,
which is a possible expected case.

Change-Id: I21cd6b5f158d5dffbc6e7309c9202e7e2e0162e8
CRs-Fixed: 2387017

qdf/linux/src/qdf_trace.c

@@ -3293,7 +3293,7 @@ static void set_default_trace_levels(struct category_info *cinfo)
 		[QDF_MODULE_ID_TARGET_IF] = QDF_TRACE_LEVEL_INFO,
 		[QDF_MODULE_ID_SCHEDULER] = QDF_TRACE_LEVEL_NONE,
 		[QDF_MODULE_ID_MGMT_TXRX] = QDF_TRACE_LEVEL_NONE,
-		[QDF_MODULE_ID_SERIALIZATION] = QDF_TRACE_LEVEL_NONE,
+		[QDF_MODULE_ID_SERIALIZATION] = QDF_TRACE_LEVEL_ERROR,
 		[QDF_MODULE_ID_PMO] = QDF_TRACE_LEVEL_NONE,
 		[QDF_MODULE_ID_P2P] = QDF_TRACE_LEVEL_NONE,
 		[QDF_MODULE_ID_POLICY_MGR] = QDF_TRACE_LEVEL_NONE,