Imagination Technologies Group has announced that Apple is purchasing 8.2 million new shares of the company, giving the iPod maker a 3.6% ownership interest. Imagination is known for its OpenGL ES-compliant PowerVR mobile GPU chips, and revealed alongside the stock announcement that Apple is a licensee of Imagination’s technology, suggesting that the company may be planning to use the PowerVR technology in future iPods and iPhones. This might also…