Not sure about a suspension for this. Does Tyson have any history of confrontation with officials? I can't recall any such history of the top of my head.
This seems to be more of a jovial "butt-slap", in a sort of congratulatory manner. I'm assuming, by the elation of the other players on the bench, this was immediately after a big moment during the game for the Knicks.
Unless Tyson has a previous history, this probably doesn't warrant anything more than a warning.