We already depend on runtime PM to get the power domains and clocks for
most of the devices supported by the vc4 driver, so let's just select it
to make sure it's there.

Link: https://lore.kernel.org/r/20220629123510.1915022-38-maxime@cerno.techAcked-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
(cherry picked from commit f1bc386b)
Signed-off-by: Maxime Ripard <maxime@cerno.tech>