inputcontrol: Don't install files that require xinput without X

We still need the udev rule & its device_added helper. Everything
else requires X11 currently, including the inputcontrol script.

BUG=chromium:371478
TEST=build with USE=-X

Change-Id: Icb43004bc4f8a37bca2f31b97a536cafdd9746a1
Reviewed-on: https://chromium-review.googlesource.com/199160
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Michael Spang <spang@chromium.org>
Tested-by: Michael Spang <spang@chromium.org>
2 files changed