[PATCH] sched: fixing wrong comment for find_idlest_cpu()

Fixing wrong comment for find_idlest_cpu().

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>