!209 添加 rt_workqueue_critical_work 声明

Merge pull request !209 from liuduanfei/gitee_master

components/drivers/include/ipc/workqueue.h

@@ -64,6 +64,7 @@ rt_err_t rt_workqueue_submit_work(struct rt_workqueue *queue, struct rt_work *wo
 rt_err_t rt_workqueue_cancel_work(struct rt_workqueue *queue, struct rt_work *work);
 rt_err_t rt_workqueue_cancel_work_sync(struct rt_workqueue *queue, struct rt_work *work);
 rt_err_t rt_workqueue_cancel_all_work(struct rt_workqueue *queue);
+rt_err_t rt_workqueue_critical_work(struct rt_workqueue *queue, struct rt_work *work);
 
 #ifdef RT_USING_SYSTEM_WORKQUEUE
 rt_err_t rt_work_submit(struct rt_work *work, rt_tick_t time);