suspend: MAINTAINERS update

> I guess it is time to clarify that suspend and hibernation are separate
> things, and add Rafael as a maintainer.  Plus, people blame us for suspend
> problems, anyway, I guess it is fair to mark us as suspend maintainers, too.

If blame is the qualification, I guess I'm already part of this merry band:-)

Change to Supported from Maintained, as the folks that sign my paycheck
agree it is a good idea for me to help out on suspend.

Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>