(Adds details) By Simon Evans MIAMI, Jan 7 (Reuters) - Alabama's 'Crimson Tide' swept aside Notre Dame in the BCS Championship game on Monday, dominating the 'Fighting Irish' 42-14 to win their third college football title in four years. Notre Dame, 12-0 in the regular season, had been looking for their first national title since 1988 but were all at sea against irresistible Alabama, who set the tone of the game with an utterly one-sided 28-0 first half.