libevdev: bump version to 1.3.1

See [1] and [2] for details.

[1] http://lists.freedesktop.org/archives/input-tools/2014-September/001112.html
[2] http://lists.freedesktop.org/archives/input-tools/2014-November/001123.html



Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Reviewed-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Tested-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>