All macro screen captures are courtesy iFixIt. Look up the entire tear down of the Surface Pro 1 and Surface Pro 2 on their site. This post is a part of the series MSP430 Inside, which showcases products using the MSP430 micro-controller.
Thanks to chicken for this tip. He must have really looked through the high resolution image as iFixIt had not marked either of the MSP430 chips. A very good find! He speculates that the MSP430G2402( 16Mhz, 8kB Flash) act as touch controllers. Do you? On the last image, he notice one near the SSD area.