drivers/mtd_flashpage: require read source & destination alignment
drivers/mtd_flashpage: require read source & destination alignment

kaspar030/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,jasonatran/RIOT,ant9000/RIOT,kYc0o/RIOT,authmillenon/RIOT,kaspar030/RIOT,jasonatran/RIOT,ant9000/RIOT,kaspar030/RIOT,jasonatran/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,kYc0o/RIOT,kYc0o/RIOT,miri64/RIOT,miri64/RIOT,ant9000/RIOT,OlegHahm/RIOT,OTAkeys/RIOT,authmillenon/RIOT,miri64/RIOT,ant9000/RIOT,RIOT-OS/RIOT,ant9000/RIOT,miri64/RIOT,RIOT-OS/RIOT,authmillenon/RIOT,OlegHahm/RIOT,OlegHahm/RIOT,RIOT-OS/RIOT,kaspar030/RIOT,authmillenon/RIOT,kaspar030/RIOT,RIOT-OS/RIOT,miri64/RIOT,jasonatran/RIOT,OTAkeys/RIOT,authmillenon/RIOT,OTAkeys/RIOT,jasonatran/RIOT,kYc0o/RIOT,kYc0o/RIOT