qcacmn: Log WMI work queue call stack on WMI WD bite

Log WMI work queue call stack when WD timer expires to assist
in debugging on non slub debug enabled builds.

Change-Id: Id3dd575700ca586b0738a88ca2af88a757238d1b
CRs-Fixed: 2789114

wmi/src/wmi_unified.c

@@ -2638,6 +2638,8 @@ static inline void wmi_workqueue_watchdog_bite(void *arg)
 	struct wmi_wq_dbg_info *info = arg;
 
 	wmi_workqueue_watchdog_warn(info->wd_msg_type_id);
+
+	qdf_print_thread_trace(info->task);
 }
 #endif