ARM: dts: amlogic: Add TCU Fernsehfee 3.0

ARM: dts: amlogic: Add TCU Fernsehfee 3.0

Fernsehfee[1] ("TV fairy") 3.0 is a set-top box with HDMI input and
output ports. It originally ran Android 4.4 and a Linux 3.10 kernel.

The following features are tested and known to work:

- Ethernet
- Power LED (switching between green and red)
- Power button
- eMMC
- SD Card
- USB
- Wifi

The following features are untested or not working:

- HDMI input and output
- Infrared remote control input and output

[1]: https://fernsehfee.de/ (German), https://telefairy.com/ (English)

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20250428-fernsehfee-v2-3-293b98a43a91@posteo.net
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>