The Dallas Cowboys suffered another loss on the offensive line this week. Second-year tackle Earl Bostick Jr. went down in practice on Wednesday with Mike McCarthy revealing Thursday that the former Jayhawk will need surgery. Bostick will return to Dallas for surgery on his leg, meanwhile, newcomer Cohl Cohl Cabral will begin working into the rotation at practice. Dallas has another preseason game coming up this weekend, this time against the Raiders in Las Vegas. Bostick won’t be with the team as he takes the first steps toward recovery. The second-year tackle was an undrafted free agent pick…