boards/arduino-due: added SD card configuration
boards/arduino-due: added SD card configuration

jasonatran/RIOT,Josar/RIOT,x3ro/RIOT,TobiasFredersdorf/RIOT,yogo1212/RIOT,x3ro/RIOT,thomaseichinger/RIOT,yogo1212/RIOT,basilfx/RIOT,jfischer-phytec-iot/RIOT,jfischer-phytec-iot/RIOT,beurdouche/RIOT,adrianghc/RIOT,BytesGalore/RIOT,mfrey/RIOT,kaleb-himes/RIOT,josephnoir/RIOT,gebart/RIOT,neiljay/RIOT,Hyungsin/RIOT-OS,basilfx/RIOT,LudwigKnuepfer/RIOT,hamilton-mote/RIOT-OS,RIOT-OS/RIOT,plushvoxel/RIOT,dailab/RIOT,kerneltask/RIOT,RIOT-OS/RIOT,jbeyerstedt/RIOT-OTA-update,LudwigOrtmann/RIOT,gebart/RIOT,gebart/RIOT,ks156/RIOT,thomaseichinger/RIOT,immesys/RiSyn,ant9000/RIOT,smlng/RIOT,authmillenon/RIOT,miri64/RIOT,cladmi/RIOT,kaspar030/RIOT,BytesGalore/RIOT,thomaseichinger/RIOT,dkm/RIOT,jasonatran/RIOT,dailab/RIOT,adrianghc/RIOT,adjih/RIOT,josephnoir/RIOT,kYc0o/RIOT,kaleb-himes/RIOT,lazytech-org/RIOT,jasonatran/RIOT,mfrey/RIOT,dailab/RIOT,jfischer-phytec-iot/RIOT,authmillenon/RIOT,beurdouche/RIOT,aeneby/RIOT,avmelnikoff/RIOT,dkm/RIOT,smlng/RIOT,kaleb-himes/RIOT,miri64/RIOT,neiljay/RIOT,thomaseichinger/RIOT,ks156/RIOT,LudwigOrtmann/RIOT,biboc/RIOT,miri64/RIOT,jfischer-phytec-iot/RIOT,miri64/RIOT,jasonatran/RIOT,kerneltask/RIOT,jbeyerstedt/RIOT-OTA-update,Hyungsin/RIOT-OS,ks156/RIOT,kaspar030/RIOT,A-Paul/RIOT,kerneltask/RIOT,mfrey/RIOT,cladmi/RIOT,kerneltask/RIOT,thomaseichinger/RIOT,authmillenon/RIOT,OlegHahm/RIOT,gebart/RIOT,gautric/RIOT,kbumsik/RIOT,plushvoxel/RIOT,beurdouche/RIOT,Josar/RIOT,kerneltask/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,immesys/RiSyn,A-Paul/RIOT,A-Paul/RIOT,biboc/RIOT,neumodisch/RIOT,adrianghc/RIOT,yogo1212/RIOT,hamilton-mote/RIOT-OS,LudwigOrtmann/RIOT,RIOT-OS/RIOT,avmelnikoff/RIOT,authmillenon/RIOT,adjih/RIOT,OTAkeys/RIOT,neumodisch/RIOT,jbeyerstedt/RIOT-OTA-update,syin2/RIOT,neumodisch/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,gautric/RIOT,aeneby/RIOT,immesys/RiSyn,roberthartung/RIOT,rfuentess/RIOT,biboc/RIOT,Josar/RIOT,LudwigOrtmann/RIOT,TobiasFredersdorf/RIOT,jasonatran/RIOT,ant9000/RIOT,TobiasFredersdorf/RIOT,toonst/RIOT,ant9000/RIOT,x3ro/RIOT,TobiasFredersdorf/RIOT,adrianghc/RIOT,immesys/RiSyn,kYc0o/RIOT,neiljay/RIOT,jfischer-phytec-iot/RIOT,roberthartung/RIOT,gautric/RIOT,Josar/RIOT,kaleb-himes/RIOT,biboc/RIOT,cladmi/RIOT,aeneby/RIOT,LudwigKnuepfer/RIOT,kbumsik/RIOT,x3ro/RIOT,immesys/RiSyn,basilfx/RIOT,adjih/RIOT,Ell-i/RIOT,adjih/RIOT,kaspar030/RIOT,kbumsik/RIOT,OTAkeys/RIOT,avmelnikoff/RIOT,jbeyerstedt/RIOT-OTA-update,neumodisch/RIOT,kbumsik/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,plushvoxel/RIOT,kYc0o/RIOT,neumodisch/RIOT,mtausig/RIOT,smlng/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,Ell-i/RIOT,ant9000/RIOT,plushvoxel/RIOT,rfuentess/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,kYc0o/RIOT,smlng/RIOT,OTAkeys/RIOT,syin2/RIOT,LudwigKnuepfer/RIOT,Hyungsin/RIOT-OS,cladmi/RIOT,mfrey/RIOT,beurdouche/RIOT,aeneby/RIOT,neiljay/RIOT,A-Paul/RIOT,dailab/RIOT,authmillenon/RIOT,OlegHahm/RIOT,josephnoir/RIOT,rfuentess/RIOT,authmillenon/RIOT,kaleb-himes/RIOT,roberthartung/RIOT,LudwigOrtmann/RIOT,mfrey/RIOT,basilfx/RIOT,dkm/RIOT,x3ro/RIOT,BytesGalore/RIOT,hamilton-mote/RIOT-OS,Ell-i/RIOT,adjih/RIOT,mtausig/RIOT,BytesGalore/RIOT,gautric/RIOT,josephnoir/RIOT,lazytech-org/RIOT,mtausig/RIOT,immesys/RiSyn,smlng/RIOT,rfuentess/RIOT,miri64/RIOT,mtausig/RIOT,avmelnikoff/RIOT,toonst/RIOT,ks156/RIOT,neumodisch/RIOT,RIOT-OS/RIOT,ant9000/RIOT,Ell-i/RIOT,biboc/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,yogo1212/RIOT,TobiasFredersdorf/RIOT,plushvoxel/RIOT,beurdouche/RIOT,RIOT-OS/RIOT,Hyungsin/RIOT-OS,gebart/RIOT,kbumsik/RIOT,Ell-i/RIOT,josephnoir/RIOT,adrianghc/RIOT,kaspar030/RIOT,syin2/RIOT,kaspar030/RIOT,hamilton-mote/RIOT-OS,toonst/RIOT,A-Paul/RIOT,syin2/RIOT,cladmi/RIOT,basilfx/RIOT,Hyungsin/RIOT-OS,foss-for-synopsys-dwc-arc-processors/RIOT,neiljay/RIOT,lazytech-org/RIOT,lazytech-org/RIOT,roberthartung/RIOT,ks156/RIOT,gautric/RIOT,OTAkeys/RIOT,dailab/RIOT,hamilton-mote/RIOT-OS,OlegHahm/RIOT,dkm/RIOT,yogo1212/RIOT,roberthartung/RIOT,rfuentess/RIOT,avmelnikoff/RIOT,toonst/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,toonst/RIOT,mtausig/RIOT,aeneby/RIOT,kYc0o/RIOT,syin2/RIOT,OlegHahm/RIOT,dkm/RIOT,yogo1212/RIOT,LudwigKnuepfer/RIOT,LudwigKnuepfer/RIOT,jbeyerstedt/RIOT-OTA-update