The 51-year-old supermodel speaks on his Polo prime, squashing beef with Diddy, and how Beyoncé got him back in his bag — Tyson Beckford is the greatest Black male model of our generation — and it’s not even close. Back in the ’90s, the lean, melanated baldie from the Bronx gave fashion houses access to minority cultures around the globe, often the only Black model in casting rooms full of blond, blue-eyed…