Buyout firms Silver Lake and Bain Capital are among the potential suitors that are likely to compete to acquire a minority stake in Altera, the programmable chips business that Intel acquired for nearly $17 billion in 2015, according to people familiar with the matter. Intel, which has already taken steps to spin Altera out as a separate company, kicked off a process for the stake sale in the unit in recent weeks, the sources said, adding that the talks are at an early stage and the company is