Memory Controller should be always-on. Currently the sibling EMC clock is
marked as critical, let's mark MC clock too for consistency.
Signed-off-by: NDmitry Osipenko <digetx@gmail.com>
Acked-By: NPeter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: NStephen Boyd <sboyd@kernel.org>