uncrustify-riot.cfg: update to coding convention
uncrustify-riot.cfg: update to coding convention

The coding convention was changed to suggest breaking lines with with
more than 100 chars. This brings the uncrustify configuration back in
sync.

kYc0o/RIOT,OlegHahm/RIOT,ant9000/RIOT,authmillenon/RIOT,ant9000/RIOT,ant9000/RIOT,kaspar030/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,jasonatran/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,OTAkeys/RIOT,kYc0o/RIOT,OlegHahm/RIOT,authmillenon/RIOT,ant9000/RIOT,OTAkeys/RIOT,kYc0o/RIOT,miri64/RIOT,ant9000/RIOT,RIOT-OS/RIOT,kYc0o/RIOT,miri64/RIOT,authmillenon/RIOT,authmillenon/RIOT,kaspar030/RIOT,OTAkeys/RIOT,miri64/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,OlegHahm/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,kYc0o/RIOT,miri64/RIOT,kaspar030/RIOT,authmillenon/RIOT,miri64/RIOT,kaspar030/RIOT,jasonatran/RIOT,jasonatran/RIOT,jasonatran/RIOT