When Quite parameter is not provided, its default value would be "None" instead of "". So update its default value not to impact the build. Cc: Ray Ni <ray.ni@intel.com> Cc: Benjamin You <benjamin.you@intel.com> Cc: Sean Rhodes <sean@starlabs.systems> Signed-off-by: Guo Dong <guo.dong@intel.com> Acked-by: Dun Tan <dun.tan@intel.com>