tree: Retype variable `laptop_ok` with bool

Use the bool type instead of an integer for the variable `laptop_ok`,
since this represents its purpose much better.

Signed-off-by: Felix Singer <felixsinger@posteo.net>
Change-Id: I5d9fc3516bc2d29f11b056e35b3e5e324ce93423
Original-Reviewed-on: https://review.coreboot.org/c/flashrom/+/66891
Original-Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Original-Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom-stable/+/71485
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
4 files changed