Add HW.Config for configuration constants

Change-Id: Id60c61fc53c6e153dcb3cf9f5c55668e38072817
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/20556
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2 files changed