Abstract genpd lock/unlock calls, in preparation for domain specific
locks added in the following patches.
Signed-off-by: NLina Iyer <lina.iyer@linaro.org>
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Reviewed-by: NKevin Hilman <khilman@baylibre.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>