DETROIT (Reuters) - Takata Corp's interiors subsidiary, Irvin Automotive, will be purchased by the Piston Group, a Detroit auto parts maker that is headed by former National Basketball Association player Vinnie Johnson, a source familiar with the matter said on Tuesday.The deal is expected to close later this week, the source said, at an undisclosed price. The Takata deal with Piston Group is not directly related to the larger effort to secure a lifeline for Takata and its primary