I don't know if the Enobio3G driver supports the '8' version of the device. This'd be better verified from the company that contributed the driver.
If it should work, read on.
First, it seems that the Linux code is there in principle, but I don't know how well it has been tested or if it works. Again, try checking from the contributor (the Neuroelectrics company). From what I can see, you could try to get it to work as follows,
1) Get the Enobio linux libraries compatible with your Linux distribution and cpu architecture (64bit need 64bit libs etc) from the Neuroelectrics company
2) Remove the disabling of the driver from openvibe in cmake-modules/FindThirdPartyNeuroElectricsEnobio3G.cmake
3) Extract the Enobio library archive so that the script above can find it; make sure symbolic links point correctly
4) You may need to install qt4-default pkg
5) Rebuild openvibe
6) If it doesn't find some lib when you launch the server, copy the enobio libs to dist/lib/