message: ToBasicHdlSimModel: update enum value format
diff: @@ -219,8 +219,9 @@ class ToBasicHdlSimModel(ToBasicHdlSimModelStm):
  w('define_Enum3t("')
  w(t.name)
  w('", [')
  - for last, v in iter_with_last(val.values):
  - w('"%s"' % v)
  + for last, (k, v) in iter_with_last(val.values):
  + assert v is None, v
  + w('"%s"' % k)
  if not last:
  w(", ")
  w("])()\n")
  