Remove the PAE-specific 2GB DMA boundary since HEAD now supports a proper 4G boundary for PAE.
Remove the PAE-specific 2GB DMA boundary since HEAD now supports a proper 4G
boundary for PAE.

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