For the sake of consistency, look up link devices relative to the root object (/) rather than the pci bus object when walking the _PRT to force attach devices.  We already look up relative to the root object when doing interrupt routing.
For the sake of consistency, look up link devices relative to the root
object (/) rather than the pci bus object when walking the _PRT to force
attach devices.  We already look up relative to the root object when doing
interrupt routing.

Suggested by:	njl

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