libevdev: bump version to 1.4.2

Update version and hash (see [1] for details).

[1] http://lists.freedesktop.org/archives/input-tools/2015-April/001167.html



Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>