[AF_IUCV]: Fix compilation on s390-up

  CC [M]  net/iucv/iucv.o
net/iucv/iucv.c: In function 'iucv_init':
net/iucv/iucv.c:1556: error: 'iucv_cpu_notifier' undeclared (first use in this function)
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/iucv/iucv.c

@@ -519,7 +519,6 @@ static void iucv_disable(void)
 	kfree(iucv_path_table);
 }
 
-#ifdef CONFIG_HOTPLUG_CPU
 static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
 				     unsigned long action, void *hcpu)
 {
@@ -565,7 +564,6 @@ static int __cpuinit iucv_cpu_notify(struct notifier_block *self,
 static struct notifier_block iucv_cpu_notifier = {
 	.notifier_call = iucv_cpu_notify,
 };
-#endif
 
 /**
  * iucv_sever_pathid