hostdev: Emit debug messages while handling PCI hostdevs
hostdev: Emit debug messages while handling PCI hostdevs

Both detach and reattach are complex operations involving several steps,
and it can be useful to be able to follow along by reading the log.

eskultety/libvirt,eskultety/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,olafhering/libvirt,jardasgit/libvirt,libvirt/libvirt,datto/libvirt,VenkatDatta/libvirt,eskultety/libvirt,zippy2/libvirt,jardasgit/libvirt,jfehlig/libvirt,datto/libvirt,datto/libvirt,taget/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,eskultety/libvirt,taget/libvirt,jardasgit/libvirt,crobinso/libvirt,fabianfreyer/libvirt,eskultety/libvirt,zippy2/libvirt,datto/libvirt,olafhering/libvirt,libvirt/libvirt,libvirt/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,datto/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jfehlig/libvirt,taget/libvirt,taget/libvirt,andreabolognani/libvirt,nertpinx/libvirt,rlaager/libvirt,andreabolognani/libvirt,VenkatDatta/libvirt,crobinso/libvirt,taget/libvirt,olafhering/libvirt,crobinso/libvirt,rlaager/libvirt,andreabolognani/libvirt,nertpinx/libvirt,jfehlig/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,olafhering/libvirt,zippy2/libvirt,rlaager/libvirt,andreabolognani/libvirt,jfehlig/libvirt,fabianfreyer/libvirt,libvirt/libvirt,crobinso/libvirt,zippy2/libvirt,rlaager/libvirt,fabianfreyer/libvirt,rlaager/libvirt