make: add submodule support
make: add submodule support

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