input: sensors: use 16 bits output for lis3dh driver

New Android version requires accelerometer has at least
12 bits resolution, sensor HAL is updated to process data
in 16 bits format and accelerometer drivers are also required
to output 16 bits sensor data.

Change-Id: Icdd5c1e60d3d60c1fd390108ec3a2e74705eba54
Signed-off-by: Daqing Chen <chendaqing@codeaurora.org>
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>