VirtIODevice argument is accessed read-only, make it const.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/virtio/virtio.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index fcaa9b03b4a..17b105c146d 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -468,7 +468,7 @@ static inline bool virtio_host_has_feature(VirtIODevice *vdev,
     return virtio_has_feature(vdev->host_features, fbit);
 }
 
-static inline bool virtio_is_big_endian(VirtIODevice *vdev)
+static inline bool virtio_is_big_endian(const VirtIODevice *vdev)
 {
     if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) {
         assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN);
-- 
2.52.0