Fix breakage in rev 1.19; the second argument to ide_pci_candma is a controller number, not a unit number.  Make this clear.
Fix breakage in rev 1.19; the second argument to ide_pci_candma is a
controller number, not a unit number.  Make this clear.

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