Make sure that the firmware version is available in dev.t4nex.X.firmware_version even if the driver fails to attach properly.  At least it'll be easy to tell what we're dealing with.
Make sure that the firmware version is available in
dev.t4nex.X.firmware_version even if the driver fails to attach
properly.  At least it'll be easy to tell what we're dealing with.

MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase