CHROMIUM: MALI: Fix GPU regulator power is not turn off issue

GPU regulator power is not turn off when idle or suspend
GPU related power bucks (Vgpu, Vgpu_sram) are turn on after init.
GPU regulator switch on/off is already implemented in pm_callback functions.
So remove the regulator control in init and deinit function.
This patch can make the regulator power correctly turn off when GPU idle

BUG=b:130687330
TEST=emerge-kukui chromeos-kernel-4_19

Change-Id: Iabc22d3874f3bc377a7c8217223537eb5229b354
Signed-off-by: Nick Fan <Nick.Fan@mediatek.com>
Reviewed-on: https://chromium-review.googlesource.com/1571048
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nick Fan <nick.fan@mediatek.corp-partner.google.com>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Nick Fan <nick.fan@mediatek.corp-partner.google.com>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
1 file changed