soc: npcx: add soc drivers for npcx4 series

This CL adds the soc drivers for npcx4 series. Besides adding npcx4m3f
and npcx4m8f support, we also modified the register offset of
LV_GPIO_CTL and PUPD_EN for npcx4 series.

Signed-off-by: Mulin Chao <mlchao@nuvoton.com>