[Why and How] - For driver disable cases in current implementation, if P-State is unsupported or still supported by firmware, we force it supported by DCN. - SubVP now needs to be included in this case along with FPO. Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Wayne Lin <wayne.lin@amd.com> Signed-off-by: Alvin Lee <Alvin.Lee2@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>