Add FSP_INFO_HEADER_SIGNATURE and FSP_INFO_EXTENDED_HEADER_SIGNATURE. Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <Jiewen.Yao@intel.com> Reviewed-by: "Ma, Maurice" <maurice.ma@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17271 6f19259b-4bc3-4df7-8a09-765794883524