[media] rtl28xxu: move rtl2832u tuner probing to .read_config()

Move rtl2832u tuner probing correct place.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

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

@@ -53,6 +53,7 @@
 struct rtl28xxu_priv {
 	u8 chip_id;
 	u8 tuner;
+	char *tuner_name;
 	u8 page; /* integrated demod active register page */
 	bool rc_active;
 };