gfxoff is temporarily disabled for navy_flounder, since
at present the feature caused some tdr when performing
display operations.
Signed-off-by: NJiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: NTao Zhou <tao.zhou1@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>