Install udev rule into /lib instead of /etc

While we are at it, combine mouse and touchpad rules into a single
inputcontrol udev rule.
Note that this fixes the broken Makefile install target dependency.

BUG=chromium-os:27064
TEST=emerge-${B} inputcontrol
   should install /lib/udev/rules.d/99-inputcontrol.rules
   should not install anything to /etc/udev/rules.d/

Change-Id: Id456b07e1a1f3ae7da08454375ffff0a525864e0
3 files changed