message: Document usage of the profiling_output_csv_file option
diff: @@ -48,6 +48,12 @@ and the following optional parameters:
  'enable_op_profiling'. Note, the platform-wide tracing might not work if the
  tool runs as a commandline native binary. For example, on Android, the
  ATrace-based tracing only works when the tool is launched as an APK.
  +* `profiling_output_csv_file`: `str` (default="") \
  + File path to export profile data to as CSV.
  + The results are printed to `stdout` if option is not set.
  + Requires `enable_op_profiling` to be `true` and the path
  + to include the name of the output CSV; otherwise
  + results are printed to `stdout`.
  ### TFLite delegate parameters
  The tool supports all runtime/delegate parameters introduced by
  