Surf legend hosts benefit concert with Goo Goo Dolls’ Rzeznik, Switchfoot’s ForemanCardiff surf legend Rob Machado will be strumming a guitar with a few of his famous musical friends on Monday, and he’s hoping several hundred friends show up to watch, for the inaugural Rob Machado Foundation Benefit Concert at the Belly Up Tavern.The fundraiser will feature John Rzeznik of the Goo Goo Dolls, Jon Foreman of Encinitas-born Switchfoot and Jon Swift, a North County singer/songwriter. Machado, 39, will emcee, sit in on a few sessions and help raise money for his foundation, which devotes its effort