Clarifying comments and todos, update current.txt.

**Note, hashes are being modified in place ONLY
because this interface has not yet been released
in a release of Android.

Updated comments for clarity nearby
some removed todo's on telephony APN
and GNSS demodulated satellite data bits.

Fixes: 34108918
Test: Built & run on Pixel, GPS & XTRA pass.

Change-Id: Ia67be4c4c095479bbbf001987c1629b57ca864a5