cpu/native: add empty uart/power_x functions
cpu/native: add empty uart/power_x functions

josephnoir/RIOT,RIOT-OS/RIOT,mtausig/RIOT,kaspar030/RIOT,neiljay/RIOT,kYc0o/RIOT,rfuentess/RIOT,miri64/RIOT,BytesGalore/RIOT,ant9000/RIOT,avmelnikoff/RIOT,mtausig/RIOT,OTAkeys/RIOT,kbumsik/RIOT,mfrey/RIOT,A-Paul/RIOT,mfrey/RIOT,mtausig/RIOT,gebart/RIOT,biboc/RIOT,smlng/RIOT,josephnoir/RIOT,basilfx/RIOT,aeneby/RIOT,gebart/RIOT,lazytech-org/RIOT,OlegHahm/RIOT,aeneby/RIOT,mfrey/RIOT,A-Paul/RIOT,cladmi/RIOT,RIOT-OS/RIOT,toonst/RIOT,kbumsik/RIOT,A-Paul/RIOT,gebart/RIOT,basilfx/RIOT,authmillenon/RIOT,miri64/RIOT,jasonatran/RIOT,kYc0o/RIOT,biboc/RIOT,mfrey/RIOT,lazytech-org/RIOT,biboc/RIOT,avmelnikoff/RIOT,ant9000/RIOT,yogo1212/RIOT,ant9000/RIOT,cladmi/RIOT,kbumsik/RIOT,kaspar030/RIOT,neiljay/RIOT,yogo1212/RIOT,OlegHahm/RIOT,neiljay/RIOT,jasonatran/RIOT,basilfx/RIOT,kYc0o/RIOT,toonst/RIOT,OTAkeys/RIOT,authmillenon/RIOT,toonst/RIOT,biboc/RIOT,kbumsik/RIOT,mtausig/RIOT,kbumsik/RIOT,OlegHahm/RIOT,jasonatran/RIOT,aeneby/RIOT,rfuentess/RIOT,kaspar030/RIOT,avmelnikoff/RIOT,aeneby/RIOT,smlng/RIOT,OlegHahm/RIOT,josephnoir/RIOT,neiljay/RIOT,cladmi/RIOT,BytesGalore/RIOT,smlng/RIOT,yogo1212/RIOT,gebart/RIOT,authmillenon/RIOT,gebart/RIOT,biboc/RIOT,authmillenon/RIOT,toonst/RIOT,basilfx/RIOT,cladmi/RIOT,yogo1212/RIOT,josephnoir/RIOT,rfuentess/RIOT,kaspar030/RIOT,miri64/RIOT,x3ro/RIOT,lazytech-org/RIOT,josephnoir/RIOT,smlng/RIOT,BytesGalore/RIOT,yogo1212/RIOT,avmelnikoff/RIOT,kaspar030/RIOT,lazytech-org/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,avmelnikoff/RIOT,aeneby/RIOT,rfuentess/RIOT,ant9000/RIOT,x3ro/RIOT,jasonatran/RIOT,yogo1212/RIOT,mtausig/RIOT,BytesGalore/RIOT,RIOT-OS/RIOT,A-Paul/RIOT,authmillenon/RIOT,rfuentess/RIOT,cladmi/RIOT,miri64/RIOT,basilfx/RIOT,kYc0o/RIOT,authmillenon/RIOT,smlng/RIOT,mfrey/RIOT,RIOT-OS/RIOT,ant9000/RIOT,miri64/RIOT,A-Paul/RIOT,BytesGalore/RIOT,lazytech-org/RIOT,neiljay/RIOT,x3ro/RIOT,x3ro/RIOT,OlegHahm/RIOT,x3ro/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,OTAkeys/RIOT,toonst/RIOT,kYc0o/RIOT