sys/shell: add missing stdio include in sc_loramac.c
sys/shell: add missing stdio include in sc_loramac.c

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