Master P’s southern bounce is the hip-hop sound of 1998, and his soundtrack to the negligible I Got the Hook-Up! is his No Limit label displaying its plumage: the boss himself, longtime associates Silkk the Shocker, Mystikal and Mia X, new acquisitions Ice Cube (with “Ghetto Vet,” one of his bleakest, bitterest tracks to date) and Snoop Doggy …