msm: camera: eeprom subdevice support for camera sensor

The OTP data for calibration is stored in the eeprom. The eeprom
is registered as a subdevice and necessary functionality is added
for reading and fetching data to user space.

Change-Id: I119a31fa7eccc597c92b7c418c8d04c291e294f5
Signed-off-by: Jeyaprakash Soundrapandian <jsound@codeaurora.org>
21 files changed