Camera: Add version 3.8 of ICameraDeviceCallback

The new version of ICameraDeviceCallback supports shutter notify with readout
timestamp.

The readout timestamp is used to re-time viewfinder frames to reduce
jitter. When camera runs at fixed frame rate, the start_of_exposure time
intervals may change, but start_or_readout intervals are constant.

Test: Camera VTS test
Bug: 189380857
Change-Id: I4c3856a4e30caa8cdf8417d437de1de3190c6fd6