Add the power_domain.txt DT file to MAINTAINERS, otherwise
get_maintainers.pl doesn't pick the right set of maintainers for changes
to the DT file.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NUlf Hansson <ulf.hansson@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>