By Tom Blow Raymond van Barneveld told Luke Littler he can “go all the way” after the 16-year-old’s sensational victory on Saturday night. Littler hammered five-time world champion Van Barneveld 4-1 at the Alexandra Palace to reach the quarter-finals of the PDC World Championship. It was a remarkable performance by the teenager, who is 40 years younger than his Dutch opponent. Littler described Van Barneveld as an “idol” before their meeting and the latter was graceful in defeat by offering the emerging star his full support. The veteran believes Littler can become champion of the world, with …