dev-libs: add libinput

The lib is required for support legacy or odd touchpads.

BUG=b:192668524
TEST=setup_board --board=${BOARD}, emerge-${BOARD} libinput

Change-Id: Ia310030c549e499de8dfbd54a4a895774ae50169
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3143772
Tested-by: Marek Maƛlanka <mm@semihalf.com>
Commit-Queue: Marcin Wojtas <mwojtas@google.com>
Reviewed-by: Nicholas Bishop <nicholasbishop@google.com>
Reviewed-by: Harry Cutts <hcutts@chromium.org>
4 files changed