Query ABS_MT_POSITION_X/Y for trackpad area

Currently we are querying ABS_X/Y for trackpad area, which might
be missing from some device driver (like Apple Magic Mouse). So
we change to query ABS_MT_POSITION_X/Y instead for trackpad area.

BUG=chromium-os:29435
TEST=Checked that CMT works with Apple Magic Mouse, and still
     works with Alex and Lumpy.

Change-Id: Ic52967762c5846f22ca7cd7b7c524b3453b6b3a7
1 file changed
tree: 6d862adbc9a2d7b44430b83cfb1450e6ae5f23dd
  1. include/
  2. src/
  3. common.mk
  4. Makefile