Enabling vilt and flava auto feature extractor.
### System Info

```shell
File ~/anaconda3/envs/vqa/lib/python3.8/site-packages/transformers/models/auto/feature_extraction_auto.py:163, in AutoFeatureExtractor.from_pretrained(cls, pretrained_model_name_or_path, **kwargs)
    161 if not is_feature_extraction_file and (has_local_config or not is_directory):
    162     if not isinstance(config, PretrainedConfig):
--> 163         config = AutoConfig.from_pretrained(pretrained_model_name_or_path, **kwargs)
    165 kwargs["_from_auto"] = True
    166 config_dict, _ = FeatureExtractionMixin.get_feature_extractor_dict(pretrained_model_name_or_path, **kwargs)

File ~/anaconda3/envs/vqa/lib/python3.8/site-packages/transformers/models/auto/configuration_auto.py:602, in AutoConfig.from_pretrained(cls, pretrained_model_name_or_path, **kwargs)
    600     return config_class.from_pretrained(pretrained_model_name_or_path, **kwargs)
    601 elif "model_type" in config_dict:
--> 602     config_class = CONFIG_MAPPING[config_dict["model_type"]]
    603     return config_class.from_dict(config_dict, **kwargs)
    604 else:
    605     # Fallback: use pattern matching on the string.

File ~/anaconda3/envs/vqa/lib/python3.8/site-packages/transformers/models/auto/configuration_auto.py:319, in _LazyConfigMapping.__getitem__(self, key)
    317     return self._extra_content[key]
    318 if key not in self._mapping:
--> 319     raise KeyError(key)
```


### Who can help?

_No response_

### Information

- [ ] The official example scripts
- [ ] My own modified scripts

### Tasks

- [ ] An officially supported task in the `examples` folder (such as GLUE/SQuAD, ...)
- [ ] My own task or dataset (give details below)

### Reproduction

trying to use vilt and flava feature extractors via AutoFeatureExtractor will result in the mentioned errors. 

### Expected behavior

```shell
I get an error when using ato classes with vilt , flava
```

ViLT is going to be added in #17286 <|||||>This issue has been automatically marked as stale because it has not had recent activity. If you think this still needs to be addressed please comment on this thread.

Please note that issues that do not follow the [contributing guidelines](https://github.com/huggingface/transformers/blob/main/CONTRIBUTING.md) are likely to be ignored.<|||||>This seems fixed for FLAVA now as well :)