MFC: 1.21: Fix bounds checking for PCIOCREAD and PCIOCWRITE.
MFC: 1.21: Fix bounds checking for PCIOCREAD and PCIOCWRITE.

Approved by:	re (hrs)

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