WhitleyOpenBoardPkg: Fix missing security library build error
7b723de06c8e1623f77eafe89cde80c57253913b broke WhitleyOpenBoardPkg build
This corrects by making SecureBootConfigDxe.inf conditional too.
Cc: Nate DeSimone <nathaniel.l.desimone@intel.com>
Cc: Chasel Chiu <chasel.chiu@intel.com>
Signed-off-by: Isaac Oram <isaac.w.oram@intel.com>
Reviewed-by: Nate DeSimone <nathaniel.l.desimone@intel.com>