boards/arduino-due: added Arduino DAC pin mapping
boards/arduino-due: added Arduino DAC pin mapping

ant9000/RIOT,kbumsik/RIOT,BytesGalore/RIOT,beurdouche/RIOT,ant9000/RIOT,Josar/RIOT,kYc0o/RIOT,josephnoir/RIOT,hamilton-mote/RIOT-OS,avmelnikoff/RIOT,basilfx/RIOT,x3ro/RIOT,avmelnikoff/RIOT,rfuentess/RIOT,hamilton-mote/RIOT-OS,A-Paul/RIOT,x3ro/RIOT,josephnoir/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,kYc0o/RIOT,aeneby/RIOT,miri64/RIOT,gebart/RIOT,BytesGalore/RIOT,kbumsik/RIOT,lazytech-org/RIOT,kYc0o/RIOT,x3ro/RIOT,cladmi/RIOT,immesys/RiSyn,mtausig/RIOT,Josar/RIOT,josephnoir/RIOT,ks156/RIOT,immesys/RiSyn,plushvoxel/RIOT,biboc/RIOT,aeneby/RIOT,roberthartung/RIOT,LudwigOrtmann/RIOT,immesys/RiSyn,ks156/RIOT,roberthartung/RIOT,adjih/RIOT,A-Paul/RIOT,kaspar030/RIOT,roberthartung/RIOT,beurdouche/RIOT,jasonatran/RIOT,immesys/RiSyn,adrianghc/RIOT,ant9000/RIOT,yogo1212/RIOT,x3ro/RIOT,biboc/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,LudwigOrtmann/RIOT,plushvoxel/RIOT,biboc/RIOT,kbumsik/RIOT,basilfx/RIOT,jasonatran/RIOT,kerneltask/RIOT,neiljay/RIOT,adjih/RIOT,hamilton-mote/RIOT-OS,aeneby/RIOT,adjih/RIOT,basilfx/RIOT,OTAkeys/RIOT,hamilton-mote/RIOT-OS,hamilton-mote/RIOT-OS,basilfx/RIOT,smlng/RIOT,cladmi/RIOT,LudwigKnuepfer/RIOT,Josar/RIOT,smlng/RIOT,neiljay/RIOT,mtausig/RIOT,OlegHahm/RIOT,LudwigOrtmann/RIOT,beurdouche/RIOT,smlng/RIOT,basilfx/RIOT,OTAkeys/RIOT,miri64/RIOT,plushvoxel/RIOT,LudwigOrtmann/RIOT,smlng/RIOT,A-Paul/RIOT,authmillenon/RIOT,OTAkeys/RIOT,aeneby/RIOT,BytesGalore/RIOT,smlng/RIOT,miri64/RIOT,adjih/RIOT,lazytech-org/RIOT,kbumsik/RIOT,kaspar030/RIOT,LudwigKnuepfer/RIOT,josephnoir/RIOT,A-Paul/RIOT,rfuentess/RIOT,jasonatran/RIOT,ks156/RIOT,kerneltask/RIOT,yogo1212/RIOT,gebart/RIOT,plushvoxel/RIOT,neiljay/RIOT,lazytech-org/RIOT,authmillenon/RIOT,gebart/RIOT,yogo1212/RIOT,ks156/RIOT,immesys/RiSyn,LudwigOrtmann/RIOT,LudwigKnuepfer/RIOT,adjih/RIOT,RIOT-OS/RIOT,OlegHahm/RIOT,avmelnikoff/RIOT,jasonatran/RIOT,mtausig/RIOT,adrianghc/RIOT,lazytech-org/RIOT,LudwigOrtmann/RIOT,beurdouche/RIOT,Josar/RIOT,mtausig/RIOT,kbumsik/RIOT,gebart/RIOT,biboc/RIOT,BytesGalore/RIOT,kerneltask/RIOT,adrianghc/RIOT,kaspar030/RIOT,LudwigKnuepfer/RIOT,neiljay/RIOT,RIOT-OS/RIOT,ks156/RIOT,roberthartung/RIOT,miri64/RIOT,cladmi/RIOT,neiljay/RIOT,biboc/RIOT,adrianghc/RIOT,authmillenon/RIOT,plushvoxel/RIOT,cladmi/RIOT,immesys/RiSyn,ant9000/RIOT,ant9000/RIOT,mfrey/RIOT,kaspar030/RIOT,A-Paul/RIOT,mfrey/RIOT,cladmi/RIOT,BytesGalore/RIOT,OTAkeys/RIOT,beurdouche/RIOT,kerneltask/RIOT,miri64/RIOT,aeneby/RIOT,OTAkeys/RIOT,kYc0o/RIOT,avmelnikoff/RIOT,lazytech-org/RIOT,x3ro/RIOT,toonst/RIOT,toonst/RIOT,yogo1212/RIOT,RIOT-OS/RIOT,mfrey/RIOT,mfrey/RIOT,josephnoir/RIOT,yogo1212/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,toonst/RIOT,yogo1212/RIOT,rfuentess/RIOT,Josar/RIOT,gebart/RIOT,adrianghc/RIOT,authmillenon/RIOT,authmillenon/RIOT,kaspar030/RIOT,kerneltask/RIOT,avmelnikoff/RIOT,rfuentess/RIOT,toonst/RIOT,toonst/RIOT,jasonatran/RIOT,mtausig/RIOT,kYc0o/RIOT,roberthartung/RIOT,LudwigKnuepfer/RIOT,mfrey/RIOT,rfuentess/RIOT