message: Add note to benchmark tool on NNAPI restrictions on /data/local/tmp/ on some Android P devices.
diff: @@ -36,12 +36,16 @@ and the following optional parameters:
  mean use no delay.
  * `use_nnapi`: `bool` (default=false) \
  Whether to use [Android NNAPI](https://developer.android.com/ndk/guides/neuralnetworks/).
  - This API is available on recent Android devices.
  + This API is available on recent Android devices. Note that some Android P
  + devices will fail to use NNAPI for models in `/data/local/tmp/` and this
  + benchmark tool will not correctly use NNAPI.
  * `use_legacy_nnapi`: `bool` (default=false) \
  Whether to use the legacy
  [Android NNAPI](https://developer.android.com/ndk/guides/neuralnetworks/)
  TFLite path, which requires the graph to be fully compatible with NNAPI.
  - This is available on recent Android devices.
  + This is available on recent Android devices. Note that some Android P
  + devices will fail to use NNAPI for models in `/data/local/tmp/` and this
  + benchmark tool will not correctly use NNAPI.
  * `use_gpu`: `bool` (default=false) \
  Whether to use the [GPU accelerator delegate](https://github.com/tensorflow/tensorflow/tree/master/tensorflow/lite/delegates/gpu).
  This option is currently only available on Android devices.
  