We really want to use the new private_atomic_state but can't right now
as we have to maintain some backward compatibility to older kernels. For
now let's follow Intel's approach and extend the drm_atomic_state.
Signed-off-by: NHarry Wentland <harry.wentland@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>