MAINTAINERS: add entry for Generic PM domains (genpd)
MAINTAINERS: add entry for Generic PM domains (genpd)

Add entry for genpd with Rafael, myself and Ulf as co-maintainers.

Signed-off-by: Kevin Hilman <f9849b02abe18c1ece6bd40346458ed53f49d31b@kernel.org>
Acked-by: Geert Uytterhoeven <a1ff81395f7e6bf5b509fe9aab06bf3419493e1d@glider.be>
Signed-off-by: Rafael J. Wysocki <27ffc44a8ec6a212fba98cfc3246c6ce8ab131e0@intel.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs