workqueue: use __cpuinit instead of __devinit for cpu callbacks

For workqueue hotplug callbacks, it makes less sense to use __devinit
which discards the memory after boot if !HOTPLUG.  __cpuinit, which
discards the memory after boot if !HOTPLUG_CPU fits better.

tj: Updated description.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

kernel/workqueue.c

@@ -3548,7 +3548,7 @@ static void gcwq_unbind_fn(struct work_struct *work)
  * Workqueues should be brought up before normal priority CPU notifiers.
  * This will be registered high priority CPU notifier.
  */
-static int __devinit workqueue_cpu_up_callback(struct notifier_block *nfb,
+static int __cpuinit workqueue_cpu_up_callback(struct notifier_block *nfb,
 					       unsigned long action,
 					       void *hcpu)
 {
@@ -3589,7 +3589,7 @@ static int __devinit workqueue_cpu_up_callback(struct notifier_block *nfb,
  * Workqueues should be brought down after normal priority CPU notifiers.
  * This will be registered as low priority CPU notifier.
  */
-static int __devinit workqueue_cpu_down_callback(struct notifier_block *nfb,
+static int __cpuinit workqueue_cpu_down_callback(struct notifier_block *nfb,
 						 unsigned long action,
 						 void *hcpu)
 {