tools/virtio: fix build caused by virtio_ring changes

Fix the build dependency for virtio_test. The virtio_ring that is used from
the test requires container_of_const(). Change to use container_of.h kernel
header directly and adapt related codes.

Signed-off-by: Shunsuke Mie <mie@igel.co.jp>
Message-Id: <20230417022037.917668-2-mie@igel.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>