virtio_scsi: v1.0 support

Note: for consistency, and to avoid sparse errors,
  convert all fields, even those no longer in use
  for virtio v1.0.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>

diff --cc drivers/scsi/virtio_scsi.c
Simple merge

diff --cc include/linux/virtio_scsi.h
Simple merge