Law & Order star Mariska Hargitay’s son August know how to make his mom happy on Mother’s Day. The 19 year old college student and his mother both love sports so he brought her to a Knicks playoff game at Madison Square Garden this weekend. Mariska also has two younger adopted kids, Amaya and Andrew, and the whole family (with dad Peter Hermann) were seen at the Paris Olympics last year. AugustĀ was lucky to inherit the good looks of both his parents…