hwmon: qpnp-adc: Add check for wrong calib data

Add check when adc calibration data are similar
for both reference channels and return error to
avoid division by zero errors.

Change-Id: Id884eb79f606fb7361fc47a96e7a6f009a113869
Signed-off-by: Dipen Parmar <dipenp@codeaurora.org>
3 files changed