gnrc_sixlowpan_frag_rb: make NOPs static inline functions
gnrc_sixlowpan_frag_rb: make NOPs static inline functions

yogo1212/RIOT,yogo1212/RIOT,jasonatran/RIOT,ant9000/RIOT,OTAkeys/RIOT,miri64/RIOT,toonst/RIOT,aeneby/RIOT,ant9000/RIOT,OTAkeys/RIOT,josephnoir/RIOT,aeneby/RIOT,kaspar030/RIOT,basilfx/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,ant9000/RIOT,OlegHahm/RIOT,miri64/RIOT,basilfx/RIOT,kaspar030/RIOT,authmillenon/RIOT,toonst/RIOT,mtausig/RIOT,miri64/RIOT,kaspar030/RIOT,jasonatran/RIOT,josephnoir/RIOT,jasonatran/RIOT,jasonatran/RIOT,kYc0o/RIOT,OlegHahm/RIOT,smlng/RIOT,basilfx/RIOT,jasonatran/RIOT,smlng/RIOT,kYc0o/RIOT,x3ro/RIOT,x3ro/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,mtausig/RIOT,OlegHahm/RIOT,miri64/RIOT,authmillenon/RIOT,smlng/RIOT,basilfx/RIOT,mtausig/RIOT,smlng/RIOT,authmillenon/RIOT,x3ro/RIOT,yogo1212/RIOT,kYc0o/RIOT,RIOT-OS/RIOT,yogo1212/RIOT,authmillenon/RIOT,ant9000/RIOT,x3ro/RIOT,yogo1212/RIOT,toonst/RIOT,toonst/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,josephnoir/RIOT,kaspar030/RIOT,toonst/RIOT,yogo1212/RIOT,x3ro/RIOT,OlegHahm/RIOT,ant9000/RIOT,mtausig/RIOT,aeneby/RIOT,josephnoir/RIOT,basilfx/RIOT,aeneby/RIOT,smlng/RIOT,mtausig/RIOT,authmillenon/RIOT,josephnoir/RIOT,OTAkeys/RIOT,miri64/RIOT,kYc0o/RIOT,aeneby/RIOT,kYc0o/RIOT