They call football a game of inches, but Oregon tackle Ajani Cornelius racked up miles chasing his gridiron dreams. Yet his heart remains home in Harlem, even now as he stars for the top-ranked college team while on the other side of the country. Pride swells in his voice when recounting his uptown upbringing and describing how his parents and older brother supported him throughout the journey.“I started playing football when I was about nine wi…