intel/compiler: infer the number of operands using lsc_op_num_data_values

intel/compiler: infer the number of operands using lsc_op_num_data_values

nir_emit_global_atomic should utilize lsc_op_num_data_values to
infer the number of operands for global atomic ops, following the same
pattern as nir_emit_surface_atomic

Fixes: 90a2137 ('intel/compiler: Use LSC opcode enum rather than legacy BRW_AOPs')
Signed-off-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26432>
(cherry picked from commit db6aaa691d05ef017b803d11cce4e341d1a98882)