Formatting positional embedding / utils
Formatting positional embedding / utils

Summary: Just formatting so review could be easier in the diff above.

Reviewed By: myleott

Differential Revision: D18925110

fbshipit-source-id: 136a72dec0c9238d309a5e5a4942e556cd2590ae

pytorch/fairseq,pytorch/fairseq,pytorch/fairseq