add a stub for bpfattach2 so bpf is not required with the 802.11 module or related drivers
add a stub for bpfattach2 so bpf is not required with the 802.11
module or related drivers

Spotted by:	Dan Lukes <dan@obluda.cz>

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