hwmon: fix barometer coefficiency report missing problem

hwmon: fix barometer coefficiency report missing problem

BZ: 19837

Barometer coefficiency reporting uses ABS_ input events. Linux kernel
will filter out ABS_ input events of same data. This will cause some of
coefficiency data wouldn't reach userspace. This commit removes ABS_
event reporting of coefficiency data, forcing userspace to use sysfs
interface for reliability.

Change-Id: I48c5466b03c96b845f5f1e2d3d06b41a7c96d364
Signed-off-by: Zhifeng Wang <zhifeng.wang@intel.com>
Reviewed-on: http://android.intel.com:8080/31770
Reviewed-by: Cai, Stanley W <stanley.w.cai@intel.com>
Reviewed-by: Du, Alek <alek.du@intel.com>
Reviewed-by: buildbot <buildbot@intel.com>
Tested-by: buildbot <buildbot@intel.com>