Intel's Wireless Display tech has promised to pull together properly equipped laptops and nearby HDTV screens since its debut last year, but until now always required an extra add-on for the TV side of the equation. That will change next year, thanks to an agreement by the chipmaker with LG promising its Cinema 3D Smart TV line will be the first ones with WiDi built right in. Just like it does with existing dongles, compatible devices can stream content (