msm: camera: eeprom driver support for target 8974

The eeprom may hold the data for calibration of autofocus,
whitebalance, lens shading and defect pixel correction.
The eeprom driver is supported with read write functionality.

Change-Id: I952bf1972bac9747ae4f0ea09c4dd6b8937c3f98
Signed-off-by: Jeyaprakash Soundrapandian <jsoundra@codeaurora.org>
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>