He’s the whole 9 yards. Long Island’s Rich “Big Daddy” Salgado is the Batman behind the scenes of the NFL — a power broker getting things done for “thousands” of athletes who trust the insurance guru to do what money can’t with his undisputed influence. “I don’t even work at it — it’s just something simple. It’s a phone call,” the 60-year-old New Hyde Park native told The Post during his busy season of a chaotic NFL free agency. Since 30, he been the go-to for ensuring various policies for