[U-Boot] [U-Boot, v4, 09/16] Add a comment for board_quiesce_devices()

[Alexander Graf]

> This exported function should have a comment describing what it does. Also
> it should really be removed in favour of device_remove(), which handles
> this sort of thing now. Add a comment with a TODO.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>

Thanks, applied to efi-next

Alex