ARM: dts: nuvoton: Add Nuvoton NPCM730 device tree

The Nuvoton NPCN730 SoC is a part of the Nuvoton NPCM7xx SoCs family.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>