security_policy: don't allow internal hash to override dbx
security_policy: don't allow internal hash to override dbx

Signed-off-by: James Bottomley <1acebbdca565c7b6b638bdc23b58b5610d1a56b8@Parallels.com>

marineam/efitools,msekletar/efitools,msekletar/efitools,marineam/efitools,msekletar/efitools,mjg59/efitools,mjg59/efitools,mjg59/efitools,marineam/efitools,msekletar/efitools,mjg59/efitools,marineam/efitools