V4L/DVB (11705): soc-camera: prepare for the platform driver conversion

Add a platform driver to soc_camera.c. This way we preserve backwards
compatibility with existing platforms and can start converting them one by one
to the new platform-device soc-camera interface.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

include/media/soc_camera.h

@@ -92,11 +92,16 @@ struct soc_camera_host_ops {
 #define SOCAM_SENSOR_INVERT_VSYNC	(1 << 3)
 #define SOCAM_SENSOR_INVERT_DATA	(1 << 4)
 
+struct i2c_board_info;
+
 struct soc_camera_link {
 	/* Camera bus id, used to match a camera and a bus */
 	int bus_id;
 	/* Per camera SOCAM_SENSOR_* bus flags */
 	unsigned long flags;
+	int i2c_adapter_id;
+	struct i2c_board_info *board_info;
+	const char *module_name;
 	/* Optional callbacks to power on or off and reset the sensor */
 	int (*power)(struct device *, int);
 	int (*reset)(struct device *);