Sensors: Invensense: 6515: Merge timestamp fixes

Merged in timestamp related changes (rev 15145) from Invensense to
address CTS Verifier test failures related to sensor event timestamps.

Bug: 25290258
Change-Id: I6af3a04bd3de5e2f9a4dcbc5ad81f22b45d90940
6 files changed
tree: 2a4644d60e6a2ebacbebc323eb9245518a81eeb4
  1. 6515/
  2. 65xx/
  3. Android.mk