boards/iotlab-common: small fix to select right serial port
boards/iotlab-common: small fix to select right serial port

cladmi/RIOT,TobiasFredersdorf/RIOT,syin2/RIOT,syin2/RIOT,thomaseichinger/RIOT,dailab/RIOT,OTAkeys/RIOT,neumodisch/RIOT,neiljay/RIOT,tfar/RIOT,hamilton-mote/RIOT-OS,kerneltask/RIOT,biboc/RIOT,syin2/RIOT,cladmi/RIOT,mfrey/RIOT,kaspar030/RIOT,jbeyerstedt/RIOT-OTA-update,dkm/RIOT,smlng/RIOT,katezilla/RIOT,aeneby/RIOT,dkm/RIOT,jbeyerstedt/RIOT-OTA-update,plushvoxel/RIOT,gebart/RIOT,avmelnikoff/RIOT,thomaseichinger/RIOT,OlegHahm/RIOT,TobiasFredersdorf/RIOT,kb2ma/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,immesys/RiSyn,adrianghc/RIOT,aeneby/RIOT,mfrey/RIOT,A-Paul/RIOT,mtausig/RIOT,thomaseichinger/RIOT,adjih/RIOT,josephnoir/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,Hyungsin/RIOT-OS,mfrey/RIOT,dailab/RIOT,avmelnikoff/RIOT,ks156/RIOT,OTAkeys/RIOT,aeneby/RIOT,dkm/RIOT,aeneby/RIOT,Josar/RIOT,jbeyerstedt/RIOT-OTA-update,avmelnikoff/RIOT,kb2ma/RIOT,toonst/RIOT,backenklee/RIOT,avmelnikoff/RIOT,avmelnikoff/RIOT,backenklee/RIOT,basilfx/RIOT,jfischer-phytec-iot/RIOT,ks156/RIOT,kYc0o/RIOT,TobiasFredersdorf/RIOT,gebart/RIOT,dailab/RIOT,jasonatran/RIOT,neiljay/RIOT,kbumsik/RIOT,gautric/RIOT,ant9000/RIOT,Hyungsin/RIOT-OS,katezilla/RIOT,josephnoir/RIOT,x3ro/RIOT,biboc/RIOT,syin2/RIOT,kbumsik/RIOT,kaleb-himes/RIOT,smlng/RIOT,smlng/RIOT,yogo1212/RIOT,basilfx/RIOT,lazytech-org/RIOT,tfar/RIOT,miri64/RIOT,rfuentess/RIOT,kYc0o/RIOT,katezilla/RIOT,lazytech-org/RIOT,A-Paul/RIOT,hamilton-mote/RIOT-OS,beurdouche/RIOT,LudwigKnuepfer/RIOT,OTAkeys/RIOT,ks156/RIOT,adjih/RIOT,Josar/RIOT,mtausig/RIOT,thomaseichinger/RIOT,backenklee/RIOT,Ell-i/RIOT,Hyungsin/RIOT-OS,lazytech-org/RIOT,OlegHahm/RIOT,jasonatran/RIOT,authmillenon/RIOT,kaspar030/RIOT,gebart/RIOT,kaleb-himes/RIOT,x3ro/RIOT,immesys/RiSyn,kYc0o/RIOT,immesys/RiSyn,kerneltask/RIOT,basilfx/RIOT,toonst/RIOT,dkm/RIOT,kb2ma/RIOT,biboc/RIOT,beurdouche/RIOT,A-Paul/RIOT,adjih/RIOT,mfrey/RIOT,kaleb-himes/RIOT,jfischer-phytec-iot/RIOT,neiljay/RIOT,neumodisch/RIOT,BytesGalore/RIOT,OTAkeys/RIOT,katezilla/RIOT,BytesGalore/RIOT,LudwigOrtmann/RIOT,Josar/RIOT,adrianghc/RIOT,TobiasFredersdorf/RIOT,OTAkeys/RIOT,dkm/RIOT,RIOT-OS/RIOT,jfischer-phytec-iot/RIOT,LudwigKnuepfer/RIOT,yogo1212/RIOT,alignan/RIOT,LudwigKnuepfer/RIOT,toonst/RIOT,roberthartung/RIOT,adjih/RIOT,alignan/RIOT,basilfx/RIOT,immesys/RiSyn,Hyungsin/RIOT-OS,kb2ma/RIOT,dailab/RIOT,yogo1212/RIOT,neumodisch/RIOT,plushvoxel/RIOT,tfar/RIOT,jasonatran/RIOT,smlng/RIOT,miri64/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,neiljay/RIOT,kerneltask/RIOT,Josar/RIOT,plushvoxel/RIOT,mtausig/RIOT,tfar/RIOT,kYc0o/RIOT,smlng/RIOT,josephnoir/RIOT,lazytech-org/RIOT,mtausig/RIOT,toonst/RIOT,BytesGalore/RIOT,TobiasFredersdorf/RIOT,A-Paul/RIOT,gautric/RIOT,ant9000/RIOT,BytesGalore/RIOT,syin2/RIOT,lazytech-org/RIOT,yogo1212/RIOT,OlegHahm/RIOT,biboc/RIOT,jbeyerstedt/RIOT-OTA-update,hamilton-mote/RIOT-OS,neiljay/RIOT,jasonatran/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,roberthartung/RIOT,beurdouche/RIOT,adrianghc/RIOT,alignan/RIOT,hamilton-mote/RIOT-OS,toonst/RIOT,Hyungsin/RIOT-OS,mtausig/RIOT,ant9000/RIOT,beurdouche/RIOT,jfischer-phytec-iot/RIOT,yogo1212/RIOT,A-Paul/RIOT,x3ro/RIOT,jfischer-phytec-iot/RIOT,OlegHahm/RIOT,kbumsik/RIOT,kaleb-himes/RIOT,kYc0o/RIOT,ant9000/RIOT,Ell-i/RIOT,adjih/RIOT,jasonatran/RIOT,roberthartung/RIOT,LudwigOrtmann/RIOT,rfuentess/RIOT,alignan/RIOT,alignan/RIOT,LudwigOrtmann/RIOT,rfuentess/RIOT,ant9000/RIOT,cladmi/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,Josar/RIOT,BytesGalore/RIOT,Ell-i/RIOT,gebart/RIOT,neumodisch/RIOT,backenklee/RIOT,authmillenon/RIOT,Ell-i/RIOT,biboc/RIOT,backenklee/RIOT,foss-for-synopsys-dwc-arc-processors/RIOT,kaspar030/RIOT,OlegHahm/RIOT,basilfx/RIOT,kerneltask/RIOT,hamilton-mote/RIOT-OS,foss-for-synopsys-dwc-arc-processors/RIOT,kerneltask/RIOT,katezilla/RIOT,LudwigKnuepfer/RIOT,jbeyerstedt/RIOT-OTA-update,josephnoir/RIOT,x3ro/RIOT,miri64/RIOT,mfrey/RIOT,authmillenon/RIOT,roberthartung/RIOT,gautric/RIOT,miri64/RIOT,authmillenon/RIOT,beurdouche/RIOT,LudwigOrtmann/RIOT,miri64/RIOT,cladmi/RIOT,kbumsik/RIOT,LudwigOrtmann/RIOT,plushvoxel/RIOT,LudwigOrtmann/RIOT,kbumsik/RIOT,adrianghc/RIOT,gebart/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,dailab/RIOT,immesys/RiSyn,aeneby/RIOT,x3ro/RIOT,kaspar030/RIOT,Ell-i/RIOT,ks156/RIOT,cladmi/RIOT,gautric/RIOT,neumodisch/RIOT,tfar/RIOT,yogo1212/RIOT,kb2ma/RIOT,kaleb-himes/RIOT,authmillenon/RIOT,roberthartung/RIOT,plushvoxel/RIOT,immesys/RiSyn,rfuentess/RIOT,thomaseichinger/RIOT,ks156/RIOT,adrianghc/RIOT,RIOT-OS/RIOT,neumodisch/RIOT,gautric/RIOT,LudwigKnuepfer/RIOT,rfuentess/RIOT