pa_sc_tile_steering_override is only programmable for gfx10.0/10.1/10.2, the same as sienna_cichlid.
Signed-off-by: NTao Zhou <tao.zhou1@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>