the last release, done in June, has GPS integrated. Most of the GPS s/w stack runs on the DSP, not on the main ARM core. And there is a small wrapper on the ARM core that bridges the GPS data from the DSP into a tty device. we also provide a couple of init script to integrate the wrapper into gpsd.
the release note for the June release have a few additional details about how to get started with the GPS. These 2 packages contains the necessary user space wrapper and init scripts. Note that you will also need to run the most recent 4.4 based kernel.