From an article on USA Today:
“If a player is disqualified for a targeting penalty in the first half, he’s out for the rest of the game. If he’s flagged for targeting in the second half, he’s out for the rest of the game and the first half of the next game. If it happens in the second half of the last game of the season and is still eligible to play the following season (and does), the suspension will be served in the first game of the next season.”