This will matter in the next patch, where we need the original
rsc->seqno.
It means slight shuffling of where we call rebind_resource() in the
`fd_try_shadow_resource()` path.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4744>