Fix OptionRomPkg build failure.

Signed-off-by: Qian Ouyang <qian.ouyang@intel.com>


git-svn-id: svn://svn.code.sf.net/p/edk2/code/trunk/edk2/OptionRomPkg@14578 6f19259b-4bc3-4df7-8a09-765794883524