Evan Ellingson’s cause of death has been revealed. The “My Sister’s Keeper” and “CSI: Miami” actor was found dead in the bedroom of a Fontana residence at about 11:30 a.m. Nov. 5, said the San Bernardino County Sheriff’s Department. “Our family is heartbroken by the sudden passing of our beloved son, brother, uncle and friend, Evan,” Ellingson’s relatives said in …