include: fix includes for NPCX drivers
include: fix includes for NPCX drivers

Add include of kernel.h for drivers using Kernel APIs.

Signed-off-by: Keith Short <f6d578f97033c25f1206cb57d52f358974c82954@google.com>

galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr,galak/zephyr,finikorg/zephyr,zephyrproject-rtos/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,finikorg/zephyr,galak/zephyr,zephyrproject-rtos/zephyr,zephyrproject-rtos/zephyr,galak/zephyr