UEFI spec requires CapsuleTarget to be a device path associated with FMP producer. Cc: Feng Tian <feng.tian@intel.com> Cc: Star Zeng <star.zeng@intel.com> Cc: Chao Zhang <chao.b.zhang@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Jiewen Yao <jiewen.yao@intel.com> Reviewed-by: Chao Zhang <chao.b.zhang@intel.com> Reviewed-by: Star Zeng <star.zeng@intel.com>