drm/amd/display: add dccg FGCG mask init
[why]
missing DCCG_GLOBAL_FGCG_REP_DIS mask macro init
Reviewed-by: Swapnil Patel <swapnil.patel@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Chuanyu Tseng <chuanyu.tseng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
authored by