PM: Fix dependencies of CONFIG_SUSPEND and CONFIG_HIBERNATION

Dependencies of CONFIG_SUSPEND and CONFIG_HIBERNATION introduced by commit
296699de6bdc717189a331ab6bbe90e05c94db06 "Introduce CONFIG_SUSPEND for
suspend-to-Ram and standby" are incorrect, as they don't cover the facts that
(1) not all architectures support suspend and (2) SMP hibernation is only
possible on X86 and PPC64 (if CONFIG_PPC64_SWSUSP is set).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 181ae70..38033db 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -273,7 +273,7 @@
 	return err;
 }
 
-#ifdef CONFIG_SUSPEND_SMP
+#ifdef CONFIG_PM_SLEEP_SMP
 static cpumask_t frozen_cpus;
 
 int disable_nonboot_cpus(void)
@@ -334,4 +334,4 @@
 out:
 	mutex_unlock(&cpu_add_remove_lock);
 }
-#endif
+#endif /* CONFIG_PM_SLEEP_SMP */