virtio: Convert exit to unrealize

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index 6da88c0..3e54e90 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -130,7 +130,7 @@
 
     /* This is what a VirtioDevice must implement */
     DeviceRealize realize;
-    void (*exit)(VirtIODevice *vdev);
+    DeviceUnrealize unrealize;
     uint32_t (*get_features)(VirtIODevice *vdev, uint32_t requested_features);
     uint32_t (*bad_features)(VirtIODevice *vdev);
     void (*set_features)(VirtIODevice *vdev, uint32_t val);