[S390] s390: rename CPU_IDLE to S390_CPU_IDLE

sched-cfs-v2.6.22-git-v18.patch introduces CPU_IDLE in sched.h.
This conflict with the already existing define in
include/asm-s390/processor.h
Just rename the s390 defines, since they will go away as soon as
we support CONFIG_NO_HZ instead of our own CONFIG_NO_IDLE_HZ.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index eb43c3b..441975b 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -93,8 +93,8 @@
 	/* disable monitor call class 0 */
 	__ctl_clear_bit(8, 15);
 
-	atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE,
-			    (void *)(long) smp_processor_id());
+	atomic_notifier_call_chain(&idle_chain, S390_CPU_NOT_IDLE,
+				   (void *)(long) smp_processor_id());
 }
 
 extern void s390_handle_mcck(void);
@@ -115,7 +115,7 @@
 	}
 
 	rc = atomic_notifier_call_chain(&idle_chain,
-			CPU_IDLE, (void *)(long) cpu);
+					S390_CPU_IDLE, (void *)(long) cpu);
 	if (rc != NOTIFY_OK && rc != NOTIFY_DONE)
 		BUG();
 	if (rc != NOTIFY_OK) {