ARM: dts: suniv: Add device tree for Lichee Pi Nano

Lichee Pi Nano is a F1C100s board by Lichee Pi.

Add initial device tree for it.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>