cf7180493c
[why] If DSC is available, a higher picture quality is achieved by using DSC with 4:4:4 format. Using 4:2:2 instead does not offer any benefit and would only introduce loss of quality. Removing it reduces maintenance and testing effort. Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Leo Li <sunpeng.li@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>