[U-Boot] [U-Boot, v2] efi_loader: LocateHandle should return EFI_NOT_FOUND if none found

[Alexander Graf]

> Spotted this debugging OpenBSD's bootloader in qemu.  (Wouldn't really
> fix anything, the problem was not having any disks, but we should
> probably return the correct error code.)
> 
> Signed-off-by: Rob Clark <robdclark at gmail.com>
> Reviewed-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Thanks, applied to efi-next

Alex