1, Synchronize CSM related structure definition's comments with Intel framework speci...

1, Synchronize CSM related structure definition's comments with Intel framework specification.
2, To following specification, correct following member's name:
   a) change the member name of EFI_COMPATIBILITY16_TABLE.OemintSegement to EFI_COMPATIBILITY16_TABLE.OemInt15Segment.
   b) change the member name of EFI_COMPATIBILITY16_TABLE.OemIntOffset to EFI_COMPATIBILITY16_TABLE. OemInt15Offset.
   c) change the member name of EFI_DISPATCH_OPROM_TABLE. BbsTablePointer to EFI_DISPATCH_OPROM_TABLE. BbsTable.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@8733 6f19259b-4bc3-4df7-8a09-765794883524