drm/amdgpu: set cpg doorbell for fiji and polaris.

add set_doorbell functions for mec and cpg.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2017-04-11 15:44:29 +08:00 • committed by Alex Deucher
commit 4f339b2936