HOTPLUG_CPU entry says "Say Y..." then "Say N.".  Slightly ugly, so I fixed
it up, and added remark about suspend on SMP as a bonus.
Signed-off-by: NPavel Machek <pavel@suse.cz>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>