tvservice backwards compatibility
tvservice backwards compatibility

Previously, not able to run new tvservice app on firmware that
did not support the new commands. You could use old apps on new
firmware though!

This fixes this and forces use of old non-ID display commands
on older firmware.

raspberrypi/userland,raspberrypi/userland,raspberrypi/userland,6by9/userland,6by9/userland,6by9/userland