add missing include file for fake_nnpi_ops_utils (#38215)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38215
add missing include file
Test Plan: tested fix on OSS
Reviewed By: yinghai
Differential Revision: D21498580
fbshipit-source-id: cf6c021738b4a93563fdb98e29502dba5898989d
