By TOM SHANAHAN Now that Bill Walton is back to analyzing college basketball following his foray into football commentary for the recent Clemson-Alabama national championship game, we need to hear from the gridiron expert of the Walton family. What were Bruce Walton’s thoughts on his “little” brother’s work? Bruce, who played in Super Bowl X for the Dallas Cowboys after a UCLA career as an All-Pac-8 and Academic All-American offensive lineman, wasn't watching as Bill appeared on TV…