By Susan Guyett INDIANAPOLIS (Reuters) – Former Subway sandwich chain pitchman Jared Fogle on Thursday was sentenced to 15-1/2 years in federal prison after pleading guilty to child pornography and sex charges. Fogle, who became famous after losing weight on a diet that included sandwiches from the fast-food chain, agreed in August to a deal with prosecutors under which he would plead guilty to charges of child pornography and traveling for illicit paid sex with minors. Fogle agreed in court on Thursday to avoid pornography, get sexual disorder treatment and will be a registered sex offender.