bce, bwi, bwn, mfi, mpt and siba_bwn all now compile that arm and mips have added a BUS_SPACE_UNSPECIFIED definition.  Add them back to the mix on these platforms.
bce, bwi, bwn, mfi, mpt and siba_bwn all now compile that arm and mips
have added a BUS_SPACE_UNSPECIFIED definition.  Add them back to the
mix on these platforms.

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