message: [tflite] bump SPLIT op ver from 1 to 3 in NNAPI delegate
  I need SPLIT op version 3. Since it's supported by TFLite and
  NNAPI 1.2. It's should be safe to bump the op version so that
  I can delegate SPLIT ops to accelerators.
diff: @@ -2023,7 +2023,7 @@ bool NNAPIDelegateKernel::Validate(
  "NNAPI only supports constant int32 axis tensor.", &val_ctx);
  } break;
  case kTfLiteBuiltinSplit: {
  - ExpectOpVersion(version, 1, &val_ctx);
  + ExpectOpVersion(version, 3, &val_ctx);
  ExpectMinAndroidSdkVersion(android_sdk_version, kMinSdkVersionForNNAPI12,
  &val_ctx);
  // Tensor indices: split_dim: 0, value: 1
  