Don't touch USB Controller power settings

The individual devices, when plugged in, while on battery, inherit the
power settings from the USB controller.

Thus if you have the controller with 2, and the individual usb device
blacklisted (to not have power settings), still it will inherit the
power saving setting from the usb controller.
Merge branch 'lmt-upstream' of github.com:rickysarraf/laptop-mode-tools into lmt-upstream

* 'lmt-upstream' of github.com:rickysarraf/laptop-mode-tools:
  start-stop-programs: add support for systemd