vfio_mdev driver registers with mdev core driver.
mdev core driver creates mediated device and calls probe routine of
vfio_mdev driver for each device.
Probe routine of vfio_mdev driver adds mediated device to VFIO core module

This driver forms a shim layer that pass through VFIO devices operations
to vendor driver for mediated devices.
Signed-off-by: NKirti Wankhede <kwankhede@nvidia.com>
Signed-off-by: NNeo Jia <cjia@nvidia.com>
Reviewed-by: NJike Song <jike.song@intel.com>
Reviewed-by: NDong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Signed-off-by: NAlex Williamson <alex.williamson@redhat.com>