MALI: midgard: not to power off all the pm cores

This is a workaround for the issue that
"400M, 500M and 600M of clk_gpu needs high vdd_gpu",
according to "6.1" of Mali Application Note
"Potential glitches on Power Domain interfaces".

BUG=chrome-os-partner:57986
TEST=build and boot on kevin

Change-Id: I58daa3cf796802f073f67bacb62734516be76205
Signed-off-by: chenzhen <chenzhen@rock-chips.com>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Reviewed-on: https://chromium-review.googlesource.com/390895
Commit-Ready: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
(cherry picked from commit bb42dd19af37fc94ca1a814834303c203152dda5)
Reviewed-on: https://chromium-review.googlesource.com/399761
1 file changed