Enable UEFI firmware to support FMP capsule format.

signed-off-by : Chao Zhang <chao.b.zhang@intel.com>
reviewed-by   : Gao Liming <liming.gao@intel.com>
reviewed-by   : Yao Jiewen <Jiewen.yao@intel.com>

git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/MdePkg@14773 6f19259b-4bc3-4df7-8a09-765794883524