GitLab

* Added flash attention 2.

* Fixes.

* Fix inheritance.

* Fixed init.

* Remove stuff.

* Added documentation.

* Add FA2 to M2M100 documentation.

* Add test.

* Fixed documentation.

* Update src/transformers/models/m2m_100/modeling_m2m_100.py
Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>

* Update docs/source/en/model_doc/nllb.md
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>

* Fixed variable name.

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Co-authored-by: Younes Belkada <49240599+younesbelkada@users.noreply.github.com>
Co-authored-by: amyeroberts <22614925+amyeroberts@users.noreply.github.com>