pkg/nimble/autoconn: improve debug output
pkg/nimble/autoconn: improve debug output

OTAkeys/RIOT,kYc0o/RIOT,ant9000/RIOT,ant9000/RIOT,ant9000/RIOT,kaspar030/RIOT,josephnoir/RIOT,josephnoir/RIOT,josephnoir/RIOT,x3ro/RIOT,kaspar030/RIOT,x3ro/RIOT,kYc0o/RIOT,jasonatran/RIOT,RIOT-OS/RIOT,toonst/RIOT,smlng/RIOT,basilfx/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,x3ro/RIOT,mtausig/RIOT,authmillenon/RIOT,toonst/RIOT,basilfx/RIOT,smlng/RIOT,RIOT-OS/RIOT,toonst/RIOT,basilfx/RIOT,smlng/RIOT,RIOT-OS/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,ant9000/RIOT,authmillenon/RIOT,toonst/RIOT,miri64/RIOT,jasonatran/RIOT,yogo1212/RIOT,miri64/RIOT,yogo1212/RIOT,kaspar030/RIOT,smlng/RIOT,mtausig/RIOT,yogo1212/RIOT,yogo1212/RIOT,authmillenon/RIOT,kYc0o/RIOT,ant9000/RIOT,kaspar030/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,kYc0o/RIOT,OTAkeys/RIOT,OlegHahm/RIOT,mtausig/RIOT,mtausig/RIOT,josephnoir/RIOT,authmillenon/RIOT,yogo1212/RIOT,authmillenon/RIOT,OlegHahm/RIOT,basilfx/RIOT,yogo1212/RIOT,toonst/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,miri64/RIOT,miri64/RIOT,x3ro/RIOT,kYc0o/RIOT,OTAkeys/RIOT,smlng/RIOT,jasonatran/RIOT,basilfx/RIOT,jasonatran/RIOT,jasonatran/RIOT,OlegHahm/RIOT,miri64/RIOT,josephnoir/RIOT,mtausig/RIOT,x3ro/RIOT