Clean up comment for the EFI_SMRAM_HOB_DESCRIPTOR_BLOCK structure type to combine the orphan comment about the specification inconsistency with the comment for the type. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8888 6f19259b-4bc3-4df7-8a09-765794883524