This field was introduced 2 months ago and it breaks virgl
compatibility between guest/host. Switch the new added field
to the end. We will still have compatibility issue but the
"bug window" is much smaller.
Fixes: e778aceaae ("virgl: update headers")
Signed-off-by: Lepton Wu <lepton@chromium.org>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10333>