[U-Boot] [U-Boot, v4, 12/14] x86: Move efi .S files into the 'lib' directory

[Alexander Graf]

> These files now need to be in a standard place so that they can be located
> by generic Makefile rules. Move them to the 'lib' directory.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>

Thanks, applied to efi-next

Alex