tests: mpu_stack_guard: whitelist efm32 boards + sort.
tests: mpu_stack_guard: whitelist efm32 boards + sort.

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