feat(typing): update call type in p2p

Author: alexfikl

sumpy/p2p.py

@@ -763,7 +763,7 @@ def get_optimized_kernel(self, max_nsources_in_one_box,
             # be as large as before. Need to simplify before unprivatizing
             knl = lp.simplify_indices(knl)
             knl = lp.unprivatize_temporaries_with_inames(knl,
-                    "iprefetch", only_var_names=local_arrays)
+                    "iprefetch", only_var_names=frozenset(local_arrays))
 
             knl = lp.add_inames_to_insn(knl,
                     "inner", "id:init_* or id:*_scaling or id:src_box_insn_*")