nir: Expose double and int64 op_to_options_mask helpers

nir: Expose double and int64 op_to_options_mask helpers

We already have one internally for int64 but we don't have a similar one
for doubles so we'll have to make one.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>