Photo: Netflix Beyoncé got you a gift for Christmas. But don’t go checking under the tree — it’s already in your Netflix account. The superstar is performing the halftime show of one of the Christmas Day NFL games on Netflix, when the Baltimore Ravens face Bey’s hometown Houston Texans. The set will likely be the live debut of her country album Cowboy Carter , with Beyoncé teasing the performance as “A Cowboy Carter Christmas.” (Forgot to get her anything? 11 Grammy nominations is probably