/usr/src/linux-headers-4.8.0-45/tools/power/ is in linux-headers-4.8.0-45 4.8.0-45.48~16.04.1.
This file is owned by root:root, with mode 0o755.
..
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/Makefile.config
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/Makefile.rules
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/acpidbg/
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/acpidbg/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/acpidump/
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/acpidump/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/ec/
/usr/src/linux-headers-4.8.0-45/tools/power/acpi/tools/ec/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/bench/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/bench/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/bench/cpufreq-bench_plot.sh
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/bench/cpufreq-bench_script.sh
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/i386/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/i386/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/kernel/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/kernel/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/x86_64/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/debug/x86_64/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/utils/
/usr/src/linux-headers-4.8.0-45/tools/power/cpupower/utils/version-gen.sh
/usr/src/linux-headers-4.8.0-45/tools/power/x86/
/usr/src/linux-headers-4.8.0-45/tools/power/x86/turbostat/
/usr/src/linux-headers-4.8.0-45/tools/power/x86/turbostat/Makefile
/usr/src/linux-headers-4.8.0-45/tools/power/x86/x86_energy_perf_policy/
/usr/src/linux-headers-4.8.0-45/tools/power/x86/x86_energy_perf_policy/Makefile