layout: Make `struct layout_include_args` private to `layout.c`

Change-Id: Icbfee68e85429fe41db1cad6b99f25e9f30cd672
Signed-off-by: Nico Huber <nico.h@gmx.de>
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/33545
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Original-Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Original-Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/72219
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2 files changed