pkg: gecko_sdk: update version for GCC7 fixes.
pkg: gecko_sdk: update version for GCC7 fixes.

biboc/RIOT,mtausig/RIOT,neiljay/RIOT,josephnoir/RIOT,josephnoir/RIOT,BytesGalore/RIOT,yogo1212/RIOT,aeneby/RIOT,basilfx/RIOT,rfuentess/RIOT,kYc0o/RIOT,OTAkeys/RIOT,miri64/RIOT,LudwigOrtmann/RIOT,A-Paul/RIOT,ant9000/RIOT,jasonatran/RIOT,OlegHahm/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,josephnoir/RIOT,miri64/RIOT,basilfx/RIOT,A-Paul/RIOT,RIOT-OS/RIOT,cladmi/RIOT,x3ro/RIOT,biboc/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,toonst/RIOT,authmillenon/RIOT,yogo1212/RIOT,cladmi/RIOT,yogo1212/RIOT,authmillenon/RIOT,kaspar030/RIOT,OTAkeys/RIOT,BytesGalore/RIOT,kaspar030/RIOT,neiljay/RIOT,gebart/RIOT,RIOT-OS/RIOT,cladmi/RIOT,OlegHahm/RIOT,x3ro/RIOT,miri64/RIOT,RIOT-OS/RIOT,ant9000/RIOT,lazytech-org/RIOT,mfrey/RIOT,x3ro/RIOT,OlegHahm/RIOT,basilfx/RIOT,smlng/RIOT,miri64/RIOT,kaspar030/RIOT,toonst/RIOT,mfrey/RIOT,LudwigKnuepfer/RIOT,mfrey/RIOT,A-Paul/RIOT,rfuentess/RIOT,ant9000/RIOT,rfuentess/RIOT,authmillenon/RIOT,LudwigKnuepfer/RIOT,josephnoir/RIOT,kYc0o/RIOT,authmillenon/RIOT,lazytech-org/RIOT,biboc/RIOT,x3ro/RIOT,yogo1212/RIOT,cladmi/RIOT,yogo1212/RIOT,cladmi/RIOT,aeneby/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,neiljay/RIOT,basilfx/RIOT,BytesGalore/RIOT,jasonatran/RIOT,kbumsik/RIOT,LudwigOrtmann/RIOT,smlng/RIOT,OlegHahm/RIOT,kbumsik/RIOT,gebart/RIOT,kaspar030/RIOT,kbumsik/RIOT,kYc0o/RIOT,biboc/RIOT,miri64/RIOT,basilfx/RIOT,RIOT-OS/RIOT,neiljay/RIOT,jasonatran/RIOT,ant9000/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,mtausig/RIOT,mtausig/RIOT,mtausig/RIOT,authmillenon/RIOT,aeneby/RIOT,toonst/RIOT,kYc0o/RIOT,x3ro/RIOT,authmillenon/RIOT,LudwigKnuepfer/RIOT,A-Paul/RIOT,LudwigKnuepfer/RIOT,gebart/RIOT,smlng/RIOT,smlng/RIOT,rfuentess/RIOT,mtausig/RIOT,LudwigOrtmann/RIOT,LudwigKnuepfer/RIOT,ant9000/RIOT,neiljay/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,kbumsik/RIOT,gebart/RIOT,RIOT-OS/RIOT,jasonatran/RIOT,A-Paul/RIOT,lazytech-org/RIOT,josephnoir/RIOT,OTAkeys/RIOT,toonst/RIOT,OTAkeys/RIOT,mfrey/RIOT,OTAkeys/RIOT,yogo1212/RIOT,aeneby/RIOT,smlng/RIOT,mfrey/RIOT,toonst/RIOT,biboc/RIOT,avmelnikoff/RIOT,OlegHahm/RIOT,LudwigOrtmann/RIOT,jasonatran/RIOT,gebart/RIOT,kbumsik/RIOT,aeneby/RIOT,LudwigOrtmann/RIOT,kaspar030/RIOT,kYc0o/RIOT