qcacmn: Dump WMI work queue stack for watchdog bite

In the event of an WMI work queue watchdog bite, dump the stack
trace to aid in debugging.

Change-Id: I7f3df5a56904748fb80afb1aef1aed90d20fbbc0
CRs-Fixed: 2145913

wmi_unified_priv.h

@@ -48,6 +48,7 @@
 #ifdef DFS_COMPONENT_ENABLE
 #include <wlan_dfs_public_struct.h>
 #endif
+#include <qdf_threads.h>
 
 #define WMI_UNIFIED_MAX_EVENT 0x100
 #define WMI_MAX_CMDS 1024
@@ -175,6 +176,18 @@ struct fwdebug {
 };
 #endif /* WLAN_OPEN_SOURCE */
 
+/**
+ * struct wmi_wq_dbg_info - WMI WQ debug info
+ * @ wd_msg_type_id - wmi event id
+ * @ wmi_wq - WMI workqueue struct
+ * @ task - WMI workqueue task struct
+ */
+struct wmi_wq_dbg_info {
+	uint16_t wd_msg_type_id;
+	qdf_workqueue_t *wmi_wq;
+	qdf_thread_t *task;
+};
+
 struct wmi_ops {
 QDF_STATUS (*send_vdev_create_cmd)(wmi_unified_t wmi_handle,
 				 uint8_t macaddr[IEEE80211_ADDR_LEN],