boards/b-l475e-iot01a: configure second I2C
boards/b-l475e-iot01a: configure second I2C

This I2C bus is used by on-board sensors

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