boards/nucleo-common: fix port on OS X
boards/nucleo-common: fix port on OS X

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