[makefile] 10x speed up checking/fixing  (#7403)
[makefile] 10x speed up checking/fixing  (#7403)

* [makefile] check/fix only modified since branching files

* fix phonies

* parametrize dirs

* have only one source for dirs to check

* look ma, no autoformatters here
huggingface/transformers,huggingface/transformers,huggingface/pytorch-transformers,huggingface/transformers,huggingface/transformers