py: Add MP_ROM_* macros and mp_rom_* types and use them.
diff --git a/py/modarray.c b/py/modarray.c
index e251b06..cfee011 100644
--- a/py/modarray.c
+++ b/py/modarray.c
@@ -28,9 +28,9 @@
 
 #if MICROPY_PY_ARRAY
 
-STATIC const mp_map_elem_t mp_module_array_globals_table[] = {
-    { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_array) },
-    { MP_OBJ_NEW_QSTR(MP_QSTR_array), (mp_obj_t)&mp_type_array },
+STATIC const mp_rom_map_elem_t mp_module_array_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_array) },
+    { MP_ROM_QSTR(MP_QSTR_array), MP_ROM_PTR(&mp_type_array) },
 };
 
 STATIC MP_DEFINE_CONST_DICT(mp_module_array_globals, mp_module_array_globals_table);