The old version was unnecessarily complex and allowed one region to
include the other.
Change-Id: Ibf7faf8103c8945b82c3962b5a7b82c3288b871f
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/30673
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
844eda0f3b