eliminate casts from the DMAADDR macro.  This depends upon bus_addr_t being a type that you can do arithmetic with.  This eliminates many warnings when compiling with PAE.
eliminate casts from the DMAADDR macro.  This depends upon bus_addr_t being
a type that you can do arithmetic with.  This eliminates many warnings when
compiling with PAE.

Various by:	scottl

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