Read MSC_TIMESTAMP from evdev and pass along This CL passes along MSC_TIMESTAMP if the device reports it. We will use this in the touchpad gesture library for more accurate time deltas, particularly for lux/hammer. BUG=b:65041115 TEST=Deploy to device which supports MSC_TIMESTAMP: values are succesfully passed. Deploy to device without MSC_TIMESTAMP support: no problems. Change-Id: Ib7c6431d11f593eb10481de6cc6348f837aee05c Reviewed-on: https://chromium-review.googlesource.com/742488 Commit-Ready: Sean O'Brien <[email protected]> Tested-by: Sean O'Brien <[email protected]> Reviewed-by: Michael Spang <[email protected]> Reviewed-by: Sean O'Brien <[email protected]>