LeCroy LogicStudio support

libsigrok now supports yet another new device. This time: the LeCroy LogicStudio.

This is a 16-channel logic analyzer with up to 1GHz sampling rate (depending on the number of channels used).

The device features a Xilinx Spartan-6 XC6SLX16, and a Cypress FX2 that takes care of the USB data transfer.

There's also an interesting mix of triggering facilities that the device supports, see the protocol docs for details.

In order to use the logic analyzer you need the respective firmware/bitstream files, which you can extract from the vendor software using the sigrok-fwextract-lecroy-logicstudio script from our sigrok-util repository.

The driver was contributed by Tilman Sauerbeck, thanks a lot!