Merge tag 'efi-2019-07-rc3-2' of git://git.denx.de/u-boot-efi

Pull request for UEFI sub-system for v2019.07-rc3 (2)

Minor patches to improve UEFI specification compliance are provided.

To allow running the UEFI self compliance tests an outdated version of
the Unicode collation protocol has been added as a configuration option
(disabled by default).