The IOMMU code now provides a common interface for finding or
creating an IOMMU group for a device on PCI buses. Make use of it
and remove piles of code.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>