Rename semi_mt_device with single_pressure_device

As we have new kernel driver for Cr-48 touchpads, there is no need for
semi-mt specific handling. Instead, we still keep the handling of
ABS_PRESSURE for other single-pressure devices.

BUG=chromium-os:32681
TEST=on device; test if mtplot works on Cr-48

Change-Id: Id8892bbd009824542480c6fcf9708c903b1ce3c0
Reviewed-on: https://gerrit.chromium.org/gerrit/28163
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Commit-Ready: Chung-yih Wang <cywang@chromium.org>
Reviewed-by: Chung-yih Wang <cywang@chromium.org>
Tested-by: Chung-yih Wang <cywang@chromium.org>
1 file changed