qcacmn: Add magic string for debug enhancement

Add magic string in the driver to automate the
stability analysis.

Change-Id: Ic4989d70827bbb680de428f8065e2fff6ea8ad2f
CRs-Fixed: 2212155

wmi/src/wmi_unified.c

@@ -1906,7 +1906,7 @@ end:
 static inline void wmi_workqueue_watchdog_warn(uint32_t msg_type_id)
 {
 	QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR,
-		  "%s: Message type %x has exceeded its alloted time of %ds",
+		  "%s: WLAN_BUG_RCA: Message type %x has exceeded its alloted time of %ds",
 		  __func__, msg_type_id, WMI_WQ_WD_TIMEOUT / 1000);
 }