ARM: dts: sun8i: Add dts file for Olimex A33-OLinuXino

A33-OLinuXino is A33 development board designed by Olimex LTD.

It has AXP223 PMU, 1GB DRAM, a micro SD card, one USB-OTG connector,
headphone and mic jacks, connector for LiPo battery and optional
4GB NAND Flash.

It has two 40-pin headers. One for LCD panel, and one for
additional modules. Also there is CSI/DSI connector.

Signed-off-by: Stefan Mavrodiev <stefan.mavrodiev@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>