[U-Boot] [U-Boot, v3, 12/21] efi_loader: support load_image() from a file-path

[Alexander Graf]

> Previously we only supported the case when the EFI application loaded
> the image into memory for us.  But fallback.efi does not do this.
> 
> Signed-off-by: Rob Clark <robdclark at gmail.com>

Thanks, applied to efi-next

Alex