libevdev_event.c: skip ABS_MT_SLOT sync for non-MT devices

BUG=chromium:365231
TEST=on device, connect a USB mouse, no (EE) messages like
    the following printed in /var/log/Xorg.0.log

(EE) cmt: USB Optical Mouse: EvdevProbeAbsinfo():228: ioctl EVIOCGABS(47) failed: Invalid argument

Change-Id: I0317a6448022a4d04415daaa3711c75e093fd03f
Reviewed-on: https://chromium-review.googlesource.com/195769
Reviewed-by: Chung-yih Wang <cywang@chromium.org>
Tested-by: Chung-yih Wang <cywang@chromium.org>
Commit-Queue: Chung-yih Wang <cywang@chromium.org>
1 file changed
tree: 063b5ccd8c2fc41d5c9fe0e96fb292d1738c2d42
  1. Makefile
  2. common.mk
  3. include/
  4. libevdev-cros.pc
  5. src/