General | Replace unsupported SBC IDs with generic SoC IDs

[MichaIng]

Status: Review

Commit list/description:
We still list hardware IDs for SBCs which were removed long time ago. Since we do not expect or ship a reference image/pre-image, we cannot know whether our tweaks for those models are still valid or not. The only relevant and valid info about those models is the SoC ID, if we have one for it. So I decided to finally remove those IDs and instead add generic hardware IDs for each SoC we have a dedicated SoC ID for. This assures that no outdated/invalid tweaks are applied or assumptions are done and on the other hand adds a basic support for a lot mot SBCs which use known SoCs, relevant e.g. to know which GPU it runs, or for onboard capabilities.

Also while updating our images, I recognised that there is no single Firefly RK3399 user anymore, even that it is now available as stable image for a longer time already. So I removed it as well in favour if a generic RK3399 ID.

Affected devices are migrated with next update automatically. In some cases, where we do not have an SoC ID, those will be migrated to the fallback "Generic Device" (ID=22). We need to document the change well so that no confusion is created, especially that it does not "reduce" support for those SBCs but reduces the risk for wrong assumptions and wrong tweaks being applied.