drm/amdgpu: force pa_sc_tile_steering_override to 0 for dimgrey_cavefish

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

drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c

@@ -4642,6 +4642,7 @@ static u32 gfx_v10_0_init_pa_sc_tile_steering_override(struct amdgpu_device *ade
 	 * pa_sc_tile_steering_override should be set to 0 */
 	if (adev->asic_type == CHIP_SIENNA_CICHLID ||
 	    adev->asic_type == CHIP_NAVY_FLOUNDER ||
+	    adev->asic_type == CHIP_DIMGREY_CAVEFISH ||
 	    adev->asic_type == CHIP_VANGOGH)
 		return 0;