Linus,
	This patch adds a new call to the In-Kernel Topology API: pcibus_to_node. 
  This call is used in the NUMAQ PCI code, as well as the pending MPIO 
code and driverfs topology.

Changelog:

1. Add new __pcibus_to_node(bus) call to include/asm-generic/topology.h
2. Implement this call for i386 in include/asm-i386/topology.h
3. Clean up PCI code in arch/i386/pci/numa.c to use this new call.

Please apply.

Cheers!

-Matt