Please list the awards won by coaches who taught the NHL League and have already died.
have already died refers to deathYear IS NOT NULL; NHL league refers to lgID = 'NHL'
SELECT DISTINCT T2.award FROM Master AS T1 INNER JOIN AwardsCoaches AS T2 ON T1.coachID = T2.coachID WHERE T1.deathYear IS NOT NULL AND T2.lgID = 'NHL'