am dc4f96a0: am 8cd0c685: am dec1d413: am ba3e973f: am 4e98f9d3: am 730c32c5: Doc change: update gps 3.1 reference docs.

* commit 'dc4f96a04d4b624b03e82c7608b96a7990ee6c20':
  Doc change: update gps 3.1 reference docs.