Feature request: add CP210X support to allwinner kernel

I tried running zigbee2mqtt on Pinephone (1.2) today. Turns out its missing CP210X module so the Sonoff CC2652P USB dongle I wanted to use doesn't show up properly (as a serial / ttyUSB device). I can see the usb bus enumerates the device itself, but that's it.

I'm still running v22.12, but looking at the git repo I can see CP210X is still not built on current HEAD for the allwinner kernel.

As a side tangent: it seems the kernel is configured with very little modules. I've hit a wall like this in the past at least once trying to play around with a mt76 usb dongle.

I tried grepping for info how to add-in some modules, but I didn't find any definitive guide how to do this "right". akms doesn't seem to fit the bill, and there's no "kernel-source" like in other distros, where one can try to add more modules after the fact (assuming new modules don't require adding