MAINTAINERS: update maintainers for hal_nuvoton
MAINTAINERS: update maintainers for hal_nuvoton

The nuvoton HAL module is for the Numicro platform, not NPCX. Update the
list of maintainers accordingly.

Link: https://github.com/zephyrproject-rtos/zephyr/issues/49678#issuecomment-1233666614
Signed-off-by: Fabio Baltieri <1c55e39c05d9ab42261288cf330256b2af6ba179@google.com>

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