AeolusUX/R36S-DTB ? reverse-engineered prompt

Build me a simple set of device tree files for these retro handheld consoles, especially the R35S, R36S, R33S, R30S, and RGB20S, so the FN button works properly out of the box.

I want it to be easy for someone to install on AmberELEC or ArkOS, with clear guidance for which DTB file to use and what to change in boot.ini if needed. If there are different screen versions for newer consoles, make sure there’s a straightforward way to tell which file to try so the display actually boots.

Keep it focused on making the device work normally, with the button and screen behaving correctly, and make the setup as simple as possible for a regular person who just wants to copy the right files onto their SD card and play. If you need to check the latest docs or examples online, go ahead and do that.