[media] rtl2830: rename 'priv' to 'dev'

Use name 'dev' for device state instance as it is more common and
also one letter shorter.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/rtl2830_priv.h

@@ -35,7 +35,7 @@ struct rtl2830_config {
 	u8 agc_targ_val;
 };
 
-struct rtl2830_priv {
+struct rtl2830_dev {
 	struct i2c_adapter *adapter;
 	struct i2c_adapter *i2c;
 	struct dvb_frontend fe;