Tell Rx radiotap that hardware leaves FCS at the end of the frame.
Tell Rx radiotap that hardware leaves FCS at the end of the frame.

Obtained from:	NetBSD (drochner@)

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