tools/virtio: fix build breakage

Previous commit ("virtio: add context flag to find vqs")
added a new 'context' flag to vring_new_virtqueue(), but the
corresponding API in tools/virtio/ is not updated causing
build errors due to conflicting declarations.

Bring code in tools/virtio in sync with that in kernel.

I have used 'false' for the value of the new boolean 'context'
flag as that seems to be the best way to preserve existing
behavior.

Tested with:

$ make -C tools/virtio clean all ARCH=x86

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

tools/virtio/virtio_test.c

@@ -100,7 +100,7 @@ static void vq_info_add(struct vdev_info *dev, int num)
 	vring_init(&info->vring, num, info->ring, 4096);
 	info->vq = vring_new_virtqueue(info->idx,
 				       info->vring.num, 4096, &dev->vdev,
-				       true, info->ring,
+				       true, false, info->ring,
 				       vq_notify, vq_callback, "test");
 	assert(info->vq);
 	info->vq->priv = info;