arm64: dts: rockchip: add Quartz64-A con40 hardware

The Quartz64-A has a 40 pin connector that exposes various functions.
Annotate the functions exposed in the device tree.
Enable i2c3, which is pulled up to vcc_3v3 on board.

The following functions are currently exposed:
i2c3
spi1
uart2
uart0
spdif

Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Link: https://lore.kernel.org/r/20220128003809.3291407-5-pgwipeout@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>