[media] rtl28xxu: rename state variable 'priv' to 'dev'

I prefer dev over priv and I want keep all my drivers in line with
that.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/dvb-usb-v2/rtl28xxu.h

@@ -68,7 +68,7 @@
 #define CMD_I2C_DA_WR    0x0610
 
 
-struct rtl28xxu_priv {
+struct rtl28xxu_dev {
 	u8 chip_id;
 	u8 tuner;
 	char *tuner_name;