drm/amd/powerplay: enable powerplay as default on CZ/ST

Enable powerplay as default on Carrizo and Stoney. And it can be
disabled with amdgpu.powerplay=0.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Huang Rui <ray.huang@amd.com>
Cc: Rex Zhu <Rex.Zhu@amd.com>
Cc: Flora Cui <Flora.Cui@amd.com>
Cc: Ken Wang <Qingqing.Wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed