firmware_TouchpadMTB: separate slots for NoReversedMotionValidator

Separate the slots for NoReversedMotionValidator so that if there
are any abnormal reversed motions, it is clear to display which slot
it is.

BUG=chromium-os:35752
TEST=Run the following command on a chromebook.
$ DISPLAY=:0 python main.py
Note that NoReversedMotionValidator will be displayed for slots 1
and 2 separately for two_finger_tracking and two_finger_swipe
gestures.

Change-Id: I9dc40129389fc89c106df761c8b1f146a070afb7
Reviewed-on: https://gerrit.chromium.org/gerrit/38904
Reviewed-by: Charlie Mooney <charliemooney@chromium.org>
Commit-Ready: Joseph Shyh-In Hwang <josephsih@chromium.org>
Tested-by: Joseph Shyh-In Hwang <josephsih@chromium.org>
1 file changed