This patch does the following: - Allow selecting 64bit from Kconfig - Fix up integer to pointer conversion that gcc complains about - Add a buildtest target in configs Tested on Thinkpad X200: boots fine to the payload Change-Id: Icb9c31a28ee231b87109b19c00ce2f8b48b5aefe Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/c/coreboot/+/64095 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-by: Angel Pons <th3fanbus@gmail.com>