pinctrl: npcx: add DEV_CTLx configuration support

Add a new pinctrl type to control peripheral modules' specific IO
characteristics such as tri-state, the power supply type selection (3.3V
or 1.8V), and so on. In NPCX series, the corresponding registers/fields
are irregular. This CL wraps these definitions to dt nodes and put them
in pinctrl property if needed.

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