Broadcom's recent deal with OpenAI places it on the same playing field as Nvidia.The artificial intelligence (AI) megatrend has lifted several companies to values above the trillion-dollar mark. The most prominent is Nvidia (NVDA 0.86%), but another one investors should keep an eye on is Broadcom (AVGO -1.24%) -- a rising star thanks to its custom AI accelerator chips.These products have a relatively small customer base now, but could see more adoption in the years to come. This could allow Broadcom to cut ...