ARM: dts: nuvoton: Add pinctrl and GPIO node

Add pin controller and GPIO node to NPCM7XX device tree.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20200929131807.15378-4-tmaimon77@gmail.com


Signed-off-by: Joel Stanley <joel@jms.id.au>