msm: camera: Initialize the sensor_init_data structure to zero

Initialize the structure sensor_init_data of type sensor_init_cfg_data
otherwise the probed_info structure will be of some random value
when sensor probe is failed.

Change-Id: Ib9cf7a685e3a446d44e290aebc5fb80dae873fd5
Signed-off-by: Viswanadha Raju Thotakura <viswanad@codeaurora.org>