MFC: Add a locked variant of bce_ifmedia_upd() and add missing locking to bce_ifmedia_upd().
MFC: Add a locked variant of bce_ifmedia_upd() and add missing locking
to bce_ifmedia_upd().

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