vell: ensure fast move events aren't lost

Because the touch size resolution on vell is coarse, the gesture
library sometimes skipped move events, thinking a finger was leaving.

This CL doesn't allow dropping move events if the finger is moving
quickly.

BUG=b:247569477
TEST=Deploy to vell and test manually.

Change-Id: Ic2c7c1d37018ba277aff2bd34f5529778d592e0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/xorg-conf/+/3928259
Reviewed-by: Denis Brockus <dbrockus@chromium.org>
Commit-Queue: Sean O'Brien <seobrien@chromium.org>
Tested-by: Sean O'Brien <seobrien@chromium.org>

50-touchpad-cmt-brya.conf

diff --git a/50-touchpad-cmt-brya.conf b/50-touchpad-cmt-brya.conf
index 5795acd..094d202 100644
--- a/50-touchpad-cmt-brya.conf
+++ b/50-touchpad-cmt-brya.conf
@@ -20,4 +20,5 @@
     MatchUSBID      "04F3:323B|04F3:044a|04F3:3267"
     Option          "Compute Surface Area from Pressure" "0"
     Option          "Palm Pressure" "90.0"
+    Option          "Max Finger Stationary Speed" "50.0"
 EndSection