sam0_common: fix sercom_id return value for SERCOM5 (#9875)
sam0_common: fix sercom_id return value for SERCOM5 (#9875)

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