For computer modules the naming standard is to have
a single board directory named after the module and
have all the baseboard support beneath it.

Also change the CONFIG name, as we may want to build
all the baseboards at once.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>