CHICAGO — DeMar DeRozan isn’t always honest with Chicago Bulls coach Billy Donovan. Donovan knows it. He values his communication with the veteran star. But in the heat of a game, Donovan knows DeRozan is never going to tell the whole truth if he’s tired. “That’s just the competitor in me,” DeRozan said. “But at the same time, if there’s something I feel like I can’t do or it would take away from the team, I wouldn’t have a problem saying it. But if I’m out there, I’m out there to give whatever is asked from me, however long they need me out there.” DeRozan hates to come out of a game. Hates t…