PHOENIX — The Ravens certainly will get to celebrate their Super Bowl triumph again in their home stadium, maybe even while honoring the retired Ray Lewis. It just might not happen to open the next NFL season. Downtown Baltimore already will be a busy place on Sept. 5, when the league planned to hold its traditional Thursday kickoff game hosted by the champions. The Orioles have a night game at Camden Yards, which shares parking lots with the Ravens’ home stadium. Unless the Ravens and the NFL can get the Orioles to run a reverse and move the game to …