freedreno: Initialize lower_int64_options to a proper value

freedreno: Initialize lower_int64_options to a proper value

We're trying to get rid of the options argument passed to
nir_lower_int64() and use the nir_options.lower_int64_options instead.
But before we can do that we must patch nir_lower_int64() callers
that don't have this field properly set.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5588>