1. Parse DSC caps from PCON DPCD
2. Policy determins if DSC is decoded at PCON
3. Enable/disable DSC at PCON
Signed-off-by: NFangzhi Zuo <Jerry.Zuo@amd.com>
Reviewed-by: NNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>