Bruce Bochy’s son might have a locker in the Giants’ major league camp, but don’t accuse the manager of nepotism. It’s usually not considered a favor to bring a relief pitcher into a bases-loaded, one-out situation. That’s what the Giants’ manager did Monday, calling on his son, Brett, in the eighth inning. The 25-year-old right-hander made a couple of nervous location mistakes in his first Cactus League appearance this spring while giving up a double and a home run to a pair of White Sox minor leaguers. The Giants once led 9-0 but Seth Loman’s three-run home run tied the score, and the game ended in a 9-9 tie. “I put him in a tough spot, but he’s a tough kid,” the elder Bochy said. “He’ll be fine. … The first time out … for these young kids, I don’t pay any attention to it.”