GW Instek GDS-800 series supported

We're happy to announce that the GW Instek GDS-800 oscilloscope series is now supported in libsigrok.

These are devices ranging from 60MHz bandwidth up to 250MHz, with a samplerate of 100MSa/s (or 25GSa/s for equivalent-time sampling).

They have RS232 connectivity per default, but there are also options to extend them with GPIB or USB ports. A (publically documented) SCPI-based protocol is used for the communication.

The scopes are also sold under the Voltcraft brand name (and the code was actually tested on a Voltcraft DSO-6060C).

The driver was contributed by Martin Lederhilger, thanks a lot!