- define new dpcd address in drm
- implement new members in dpcd_caps to store values read from new dpcd address
Signed-off-by: NAlvin lee <alvin.lee3@amd.com>
Reviewed-by: NHarry Wentland <Harry.Wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>