Set the camera I2C to 100kHz, re-enable mode check - Configure the device tree to give us a 100kHz clock rate on the camera's I2C bus, to match the Enterprise behavior. This fixes autofocus, as well. - At 100kHz I2C speeds, the unconditional mode switch seems to be no longer required on every stream start, so re-add it. Change-Id: I7568a11a7b180cc82b959ecaa3b9f3073a078997