Remove bogus timeout_func_t casts. Remove unused headers. Remove all but one instance of the device base name. Prototype some local static functions. Consistently reference the softc structure as "sc" rather than "lpt".
Remove bogus timeout_func_t casts.
Remove unused headers.
Remove all but one instance of the device base name.
Prototype some local static functions.
Consistently reference the softc structure as "sc" rather than "lpt".

Prompted-by:	bde

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