drm/amdgpu/powerplay/vega10: enable mclk switching if monitors are synced

If DC has synced the displays, we can enable mclk switching to
save power.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2019-08-08 00:48:58 -05:00
commit 55b852069d