workqueue: reorder queueing functions so that _on() variants are on top

Currently, queue/schedule[_delayed]_work_on() are located below the
counterpart without the _on postifx even though the latter is usually
implemented using the former.  Swap them.

This is cleanup and doesn't cause any functional difference.

Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index af15545..5970342 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -365,23 +365,24 @@
 
 extern void destroy_workqueue(struct workqueue_struct *wq);
 
-extern int queue_work(struct workqueue_struct *wq, struct work_struct *work);
 extern int queue_work_on(int cpu, struct workqueue_struct *wq,
 			struct work_struct *work);
-extern int queue_delayed_work(struct workqueue_struct *wq,
-			struct delayed_work *work, unsigned long delay);
+extern int queue_work(struct workqueue_struct *wq, struct work_struct *work);
 extern int queue_delayed_work_on(int cpu, struct workqueue_struct *wq,
 			struct delayed_work *work, unsigned long delay);
+extern int queue_delayed_work(struct workqueue_struct *wq,
+			struct delayed_work *work, unsigned long delay);
 
 extern void flush_workqueue(struct workqueue_struct *wq);
 extern void drain_workqueue(struct workqueue_struct *wq);
 extern void flush_scheduled_work(void);
 
-extern int schedule_work(struct work_struct *work);
 extern int schedule_work_on(int cpu, struct work_struct *work);
-extern int schedule_delayed_work(struct delayed_work *work, unsigned long delay);
+extern int schedule_work(struct work_struct *work);
 extern int schedule_delayed_work_on(int cpu, struct delayed_work *work,
-					unsigned long delay);
+				    unsigned long delay);
+extern int schedule_delayed_work(struct delayed_work *work,
+				 unsigned long delay);
 extern int schedule_on_each_cpu(work_func_t func);
 extern int keventd_up(void);