package/vlc: security bump to version 2.2.5.1

This release contains "various security improvements in demuxers and
decoders".
Release notes: http://www.videolan.org/vlc/releases/2.2.5.html



Added all hashes provided by upstream.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>