Mark Wahlberg says he’s not the star of A&E reality show “Wahlburgers,” about their family-run burger joint. “I’m only in it for a certain amount of time. It’s really about the people running the business on a day-to-day basis, and then us trying to build the business,” he told us while promoting his movie “Lone Survivor.” Wahlberg is expanding the chain, telling us there are plans to open “a couple in Philadelphia and a couple in Toronto . . . one in Fenway Park and Lynnfield, Mass.”