qcacmn: Reduce log level of serialization deinit

Add change to reduce log level for the serialization deinit
debug string as part of bootlog cleanup.

Change-Id: Ibf1cf8352df053df0dba6239f503b868a870a04d
CRs-Fixed: 2623638

umac/cmn_services/serialization/src/wlan_serialization_main.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2017-2020 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -618,7 +618,7 @@ QDF_STATUS wlan_serialization_deinit(void)
 		ret_status = QDF_STATUS_E_FAILURE;
 	}
 
-	ser_alert("deregistered callbacks with obj mgr successfully");
+	ser_debug("deregistered callbacks with obj mgr successfully");
 
 	return ret_status;
 }