[U-Boot] [U-Boot, v2, 6/8] x86: efi: Add EFI loader support for x86

[Alexander Graf]

> Add the required pieces to support the EFI loader on x86.
> 
> Since U-Boot only builds for 32-bit on x86, only a 32-bit EFI application
> is supported. If a 64-bit kernel must be booted, U-Boot supports this
> directly using FIT (see doc/uImage.FIT/kernel.its). U-Boot can act as a
> payload for both 32-bit and 64-bit EFI.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> Reviewed-by: Bin Meng <bmeng.cn at gmail.com>

Thanks, applied to