The hwdb was a quick and easy way to add entries for new devices but we need
more and more info about the various types of devices. It's better to move
this to a proper database.
Side-effect: this also gives us an easy way to point to the list of devices
supported and makes checking for e.g. missing svgs easier.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>