panvk: advertise VK_KHR_float_controls2

This is all supported by the common nir code, no changes needed on our
end.

Signed-off-by: Benjamin Lee <benjamin.lee@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33660>
3 files changed