drm/amdgpu: add gfx10 specific new member pa_sc_tile_steering_override

New gfx config parameter.
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.h

@@ -134,6 +134,7 @@ struct amdgpu_gfx_config {
 	/* gfx10 specific config */
 	uint32_t num_sc_per_sh;
 	uint32_t num_packer_per_sc;
+	uint32_t pa_sc_tile_steering_override;
 };
 
 struct amdgpu_cu_info {