drm/amdgpu/powerplay/vega10: enable AVFS control via ppfeaturemask

Allow the user to disable AFVS via ppfeaturemask for debugging.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c

@@ -129,7 +129,8 @@ static void vega10_set_default_registry_data(struct pp_hwmgr *hwmgr)
 	data->registry_data.thermal_support = 1;
 	data->registry_data.fw_ctf_enabled = 1;
 
-	data->registry_data.avfs_support = 1;
+	data->registry_data.avfs_support =
+		hwmgr->feature_mask & PP_AVFS_MASK ? true : false;
 	data->registry_data.led_dpm_enabled = 1;
 
 	data->registry_data.vr0hot_enabled = 1;