Wiki Edits: open_issues/pci arbiter

[Joshua Branson]

Since the PCI Arbiter was recently merged, I wanted to update the Hurd
wiki. The following is a fairly large patch that does just that. The
image is one that I stole from Samuel's talk.

Thanks,

Joshua

[Samuel Thibault]

Post by Joshua Branson
Since the PCI Arbiter was recently merged, I wanted to update the Hurd
wiki.

Nice, thanks :)

Samuel