kconfiglib: Update to 981d24aff7654

Update Kconfiglib to upstream revision 981d24aff7654 (+ local Zephyr
modifications) to get commit 981d24aff7654 ("Set is_menuconfig True on
the top menu") in. It will be needed by the menuconfig implementation.

Origin: https://github.com/zephyrproject-rtos/Kconfiglib/tree/zephyr

Signed-off-by: Ulf Magnusson <ulfalizer@gmail.com>
1 file changed