configs: CHIP: add support for DIP detect functionality

This commit enables using the extension board detection mechanism on
CHIP boards

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Acked-by: Maxime Ripard <maxime@cerno.tech>
Acked-by: Andre Przywara <andre.przywara@arm.com>