Swanky: Reduced dead reconing threshold

The threshold was so high that it would clear the scroll buffer
after a regular fast scroll, leading to no fling being sent afterwards.
No regressions in touchtests.

BUG=chromium:356254
TEST=touchtests swanky-elan-2.0/fling_after_scroll_1

Change-Id: I2a979c06cf7a796242d7d7a664e0453ac4f88073
Reviewed-on: https://chromium-review.googlesource.com/263010
Reviewed-by: Charlie Mooney <charliemooney@chromium.org>
Commit-Queue: Dennis Kempin <denniskempin@chromium.org>
Tested-by: Dennis Kempin <denniskempin@chromium.org>
1 file changed