early_serial and some ACPI needed for compilation Change-Id: I5dd970676488697156e0630392884f31149ac85b Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/824 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>