Remove "acpi_bus_number: can't get _ADR" message.  It usually appears as we traverse \_SB and \ in the namespace, which won't have _ADR anyway. Use a proper extern instead of our own private copy.
Remove "acpi_bus_number: can't get _ADR" message.  It usually appears as
we traverse \_SB and \ in the namespace, which won't have _ADR anyway.
Use a proper extern instead of our own private copy.

MFC after:	1 week

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