/usr/lib/linux-tools/4.4.0-62-lowlatency/x86_energy_perf_policy is in linux-tools-4.4.0-62-lowlatency 4.4.0-62.83~14.04.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/linux-tools/4.4.0-62-lowlatency/../../linux-lts-xenial-tools-4.4.0-62/x86_energy_perf_policy