Merge tag 'efi-2019-07-rc5-2' of git://git.denx.de/u-boot-efi

Pull request for UEFI sub-system for v2019.07-rc5 (2)

This pull request provides bug fixes for the UEFI sub-system. The most
relevant one concerns the allocation of memory at address 0. It is
needed for booting Linux on several boards via bootefi, e.g. the Asus
TinkerBoard.

An undefined reference bug in disk/part.c related to a division is
resolved.