Be more careful in dumpconf: softc may be NULL for departing devices.
Be more careful in dumpconf: softc may be NULL for departing devices.

Allow drivers to initialize the d_devstat if they want magic params.

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