Humanoid robots are on display at the booth of U.S. chipmaker Nvidia during the 4th Supply Chain Expo in China.Johannes Neudecker | Picture Alliance | Getty ImagesChipmaker Nvidia says it is entering revenue-sharing agreements with fast-growing start-ups, in a move which will see customers swap access to compute power for a slice of future profits.The artificial intelligence chip leader says its new partnership program, announced Thursday, offers fast-growing AI startups token credits to power t...