[PATCH] Documentation: Updated PCI Error Recovery

This patch is a cleanup/restructuring/clarification of the PCI error
handling doc.  It should look rather professional at this point.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>