py: Factor out impl of special methods for builtin types into opmethods.c
diff --git a/py/builtin.h b/py/builtin.h
index a298444..2159b71 100644
--- a/py/builtin.h
+++ b/py/builtin.h
@@ -35,6 +35,9 @@
 
 MP_DECLARE_CONST_FUN_OBJ(mp_namedtuple_obj);
 
+MP_DECLARE_CONST_FUN_OBJ(mp_op_contains_obj);
+MP_DECLARE_CONST_FUN_OBJ(mp_op_getitem_obj);
+
 extern const mp_obj_module_t mp_module___main__;
 extern const mp_obj_module_t mp_module_array;
 extern const mp_obj_module_t mp_module_collections;