uboot-imx

Merge tag 'signed-efi-next' of git://github.com/agraf/u-boot

Patch queue for efi - 2018-01-23

This time around we have a lot of EFI patches from Heinrich.
Highlights are:

  - Allow EFI applications to register as drivers
  - Allow exposure of U-Boot block devices from an EFI payload
  - Compatibility improvements