How many matches did team Kings XI Punjab win in season year 2008?
in season year 2008 refers to Season_Year = 2008; team Kings XI Punjab refers to Team_Name = 'Kings XI Punjab'
SELECT COUNT(DISTINCT T2.Match_Id) FROM Team AS T1 INNER JOIN Match AS T2 ON T1.team_id = T2.match_winner INNER JOIN Player_Match AS T3 ON T1.Team_Id = T3.Team_Id INNER JOIN Season AS T4 ON T2.Season_Id = T4.Season_Id WHERE T1.Team_Name = 'Kings XI Punjab' AND T4.Season_Year = 2008