message: Update Max Pool 2d to support versions 1 and 2.  This is accurate since we support int8 data types in the kernel implementation.
diff: @@ -22,7 +22,7 @@ namespace micro {
  // AddBuiltin(<operator ID>, <registration>, [min version], [max version])
  AllOpsResolver::AllOpsResolver() {
  AddBuiltin(BuiltinOperator_FULLY_CONNECTED, Register_FULLY_CONNECTED(), 1, 4);
  - AddBuiltin(BuiltinOperator_MAX_POOL_2D, Register_MAX_POOL_2D());
  + AddBuiltin(BuiltinOperator_MAX_POOL_2D, Register_MAX_POOL_2D(), 1, 2);
  AddBuiltin(BuiltinOperator_SOFTMAX, Register_SOFTMAX(), 1, 2);
  AddBuiltin(BuiltinOperator_LOGISTIC, Register_LOGISTIC());
  AddBuiltin(BuiltinOperator_SVDF, Register_SVDF(), 1, 3);
  