sun8i: h3: Add support for the Beelink-x2 STB

sun8i: h3: Add support for the Beelink-x2 STB

The Beelink X2 is an STB based on the Allwinner H3 SoC with a uSD slot,
2 USB ports( 1 * USB-2 Host, 1 USB OTG), a 10/100M ethernet port using the
SoC's integrated PHY, Wifi via an sdio wifi chip, HDMI, an IR receiver, a
dual colour LED and an optical S/PDIF connector.

Linux commit details about the sun8i-h3-beelink-x2.dts sync:
"ARM: dts: sun8i: h3: Add ethernet0 alias to Beelink X2"
(sha1: cc4bddade114b696ab27c1a77cfc7040151306da)

Signed-off-by: Marcus Cooper <codekipper@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>