[media] rtl2832: add platform data callbacks for exported resources

Add callback for all of those functions which are currently
exported using EXPORT_SYMBOL. That allows us convert every user to
callbacks and eventually all exported symbols could be removed.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h
index cfd69d8..dbc4d3c 100644
--- a/drivers/media/dvb-frontends/rtl2832.h
+++ b/drivers/media/dvb-frontends/rtl2832.h
@@ -58,6 +58,13 @@
 	 * returned by driver
 	 */
 	struct dvb_frontend **dvb_frontend;
+
+	/*
+	 */
+	struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
+	struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
+	struct i2c_adapter* (*get_private_i2c_adapter)(struct i2c_client *);
+	int (*enable_slave_ts)(struct i2c_client *);
 };
 
 #if IS_ENABLED(CONFIG_DVB_RTL2832)