arm64: allwinner: h6: Add common orangepi nodes into dtsi

Based on the information from hardware schematics and orangepi
vendor orangepi H6 boards, One Plus and Lite2 shares common nodes
like axp805, uart, mmc0 etc. The common differences between them is
- One Plus, has Ethernet
- Lite2, has Wifi, USB3, CSI port.

So, add common orangepi nodes into sun50i-h6-orangepi.dtsi so-that
it case use on respective orangepi h6 board dts files.

Cc: zhaoyifan <zhao_steven@263.net>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>