vfio/spapr: Extend VFIOIOMMUOps with a release handler

This allows to abstract a bit more the sPAPR IOMMU support in the
legacy IOMMU backend.

Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Tested-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
3 files changed