The state Supreme Judicial Court has reinstated a parental kidnapping charge against Ernesto Gonzalez, the Lynn man whose 5-year-old son, Giovanni, went missing in August 2008. Gonzalez was the last person seen with his son and was charged with parental kidnapping and misleading investigators. He has not been charged with killing his son, though he told a Boston Globe reporter in an interview that he did. A Salem Superior Court judge tossed out the parental kidnapping charge in June 2011.