Add new documentation generated by util/util_readme/util_readme.sh.
This also fixes the following Sphinx warning:
util/abuild/index.md: WARNING: document isn't included in any toctree
Change-Id: I26c33af3c5a5853f6bcce23e982a6b192b01f1d7
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77441
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nicholas Chin <nic.c3.14@gmail.com>