ITE boards/it8xxx2_evb/dts: add voltage comparator instance
ITE boards/it8xxx2_evb/dts: add voltage comparator instance

Add voltage comparator instance for driver test.

Signed-off-by: Ruibin Chang <6748d95250dd3d29f04d200035d5434f3b7820ef@ite.com.tw>

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