py: Add MICROPY_PY_BUILTINS_ENUMERATE, disable for minimal ports.
diff --git a/py/mpconfig.h b/py/mpconfig.h
index b2f37e9..4065c68 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -459,6 +459,11 @@
 #define MICROPY_PY_BUILTINS_COMPILE (0)
 #endif
 
+// Whether to support enumerate function(type)
+#ifndef MICROPY_PY_BUILTINS_ENUMERATE
+#define MICROPY_PY_BUILTINS_ENUMERATE (1)
+#endif
+
 // Whether to support the Python 2 execfile function
 #ifndef MICROPY_PY_BUILTINS_EXECFILE
 #define MICROPY_PY_BUILTINS_EXECFILE (0)