This change adds EMP packet programming for enabling dsc with
hdmi. The packets are structured according to VESA HDMI 2.1x
r2 spec, section 10.10.2.2.
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>