Malcolm LaVergne, O.J. Simpson’s longtime attorney, revealed that the former football star died from prostate cancer. LaVergne, who is also the executor of Simpson’s estate, said the information was obtained from the official death certificate, according to TMZ. Simpson died at his home and was surrounded by his friends and family at the time of his passing, at the age of 76. O.J. Simpson appears in District Court during his trial at the Clark County Regional Justice Center September 25, 2008 in Las Vegas, Nevada. Photo by Isaac Brekken-Pool/Getty Images Simpson first revealed he was diagnosed…