arm64: dts: meson: add initial device-tree for Tanix TX9 Pro

arm64: dts: meson: add initial device-tree for Tanix TX9 Pro

Oranth Tanix TX9 Pro is based on the Amlogic Q200 reference design with
an S912 chip and the following specs:

- 3GB DDR3 RAM
- 32GB eMMC
- 10/100/1000 Base-T Ethernet
- AP6356 Wireless (802.11 b/g/n/ac, BT 5.0)
- HDMI 2.0a video
- VFD for clock/status
- 2x USB 2.0 ports
- IR receiver
- 1x Power LED (white)
- 1x Update/Reset button (underside)
- 1x micro SD card slot

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://patch.msgid.link/20250927125006.824293-2-christianshewitt@gmail.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>