Meta Platforms Inc. is acquiring chips startup Rivos Inc., according to a person familiar with the deal, part of an effort to bolster its internal semiconductor development and control more of its infrastructure for artificial intelligence work. Rivos is developing its own graphics processing unit, known as a GPU, which is the chip that powers most AI-related work. Meta already has a team internally building chips for AI development, known as the Meta Training and Inference Accelerator, but the...