Fix timestamp type
Fix timestamp type

This fixes and issue where invalid timestamps are seen in event
reports.

Change-Id: Ia55b4d5065482a8e41e0702b6eb711c67981a447
Signed-off-by: Octavian Purdila <77c06d0261d8d3a9171f87dd4ca9bbbd1924db77@intel.com>

01org/android-iio-sensors-hal,01org/android-iio-sensors-hal