start of some pci cleanups

[Jesse Barnes]

On Tuesday, July 19, 2005 11:26 am, Jesse Barnes wrote:
> Yep, the I/O routines should take a PCI dev (what about non-PCI
> devices?) as well.  All of this work *will* affect the API and ABI
> though, I don't see a way of avoiding that.  Fixing up the in-tree
> drivers should be easy, out of tree drivers will have to get fixed up
> on their own.

...but I just remembered that there's an IObase variable that gets set 
and stuffed somewhere that platforms can use to determine where the I/O 
needs to go (set by MapDomainMemory I think), but if we're doing search 
and replace on APIs we may as well fix them up properly and get rid of 
globals like that.

Jesse