udev: Allow more devices to be listed

The current device detection is overly restrictive and only allows for a small list of subsystems with little to no external input from the user as to what should be listed. This means a lot of stuff can easily be misplaced regardless of what a user may want, and some devices can't be queried via Solid at all. I don't know the rationale behind this, but this commit expands the list to more input devices that are flagged properly as well as the cec subsystem.

cc @apol