Nearly a year after Central Texas was announced as the site for a “once-in-a-generation” semiconductor factory, another one is being planned for the region. Idaho-based Micron Technology Inc. could invest $80 billion in factories near Lockhart, a city about 35 miles southeast of Austin with a population of roughly 15,000 and a reputation as the barbecue capital of Texas. The details came to light in incentives applications and the company has not made a final decision on whether to proceed.