Document '-l' command-line option.
Document '-l' command-line option.

Add this option to the usage display.

Signed-off-by: Trevor Woerner <8835777cd84fba3d7873eabbbe1f2de2d3f25b00@gmail.com>
Signed-off-by: Peter Hutterer <b9c50af7afa7642f6f854434cda9ffe54ece8b85@who-t.net>

freedesktop-unofficial-mirror/xorg__util__modular,freedesktop-unofficial-mirror/xorg__util__modular,tmzt/androix-util-modular,freedesktop-unofficial-mirror/xorg__util__modular,tmzt/androix-util-modular