message: Update CMake guide with available options
diff: @@ -110,6 +110,20 @@ In the tflite_build directory,
  cmake --build . -j -t benchmark_model
  ```
  +## Available Options to build TensorFlow Lite
  +
  +Here is the list of available options. You can override it with
  +`-D<option_name>=[ON|OFF]`. For example, `-DTFLITE_ENABLE_XNNPACK=OFF` to
  +disable XNNPACK which is enabled by default.
  +
  +Option Name | Feature | Default
  +--------------------- | ---------------------------------------- | ------------
  +TFLITE_ENABLE_RUY | Enable RUY matrix multiplication library | OFF
  +TFLITE_ENABLE_NNAPI | Enable NNAPI delegate | ON (Android)
  +TFLITE_ENABLE_GPU | Enable GPU delegate | OFF
  +TFLITE_ENABLE_XNNPACK | Enable XNNPACK delegate | ON
  +TFLITE_ENABLE_MMAP | Enable MMAP (unsupported on Windows) | ON
  +
  ## Create a CMake project which uses TensorFlow Lite
  Here is the CMakeLists.txt of
  