This can be used to easily identify a specific chip on a system with
multiple chips.
Suggested-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: NCédric Le Goater <clg@kaod.org>
Reviewed-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>