Simplify MT9M133 V4L2 driver, fix sensor i2c address, do not reset sensor core registers at startup

Removed unsupported saturation code.

Fixed sensor i2c address to valid (0x78).

I think there's no need to reset the sensor's core registers at
startup. Moreover it requires introducing some delay before we
can set the new values and the msm_sensor interface does not
support such thing right now.
Add mode settings to MT9M133 V4L2 driver

Taken from V4L2 driver for GalaxyCore mt9m113 cameras by raymonxiu
Register V4L2 cameras properly
Typo fixes in MT9M113 V4L2 driver

I've made some typo fixes preventing the driver from compiling.