Singer and actor Shonka Dukureh, best known for playing Big Mama Thornton in the Baz Luhrmann film “Elvis,” is dead at 44. Police said the gospel-singing mother or two was found dead in her Nashville, Tennessee, home shortly before 9:30 a.m. Thursday. No cause of death has been reported, though there’s said to be no evidence of foul play. She was discovered by one of her children who went to a neighbor for help, according to People. Police said Fisk was a graduate of Fisk University, which is historic Black school in Nashville that dates back to 1866. According to her website, that’s where she…