input: sensors: fix bma2x2 sensor calibration handle

Bma2x2 sensor calibration data is not correctly stored, fix this issue
and make sure the sensor can be calibrated and store calibration
data correctly.

Change-Id: I4132e90e4bc3438ae755e9da7d84946944d1896a
Signed-off-by: Daqing Chen <chendaqing@codeaurora.org>