[media] sp2: fix incorrect struct

Incorrect struct used in the SP2 driver.
Reported-by: NMax Nibble <nibble.max@gmail.com>
Signed-off-by: NOlli Salonen <olli.salonen@iki.fi>
Reviewed-by: NAntti Palosaari <crope@iki.fi>
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/sp2.c

@@ -407,7 +407,7 @@ static int sp2_probe(struct i2c_client *client,
 
 static int sp2_remove(struct i2c_client *client)
 {
-	struct si2157 *s = i2c_get_clientdata(client);
+	struct sp2 *s = i2c_get_clientdata(client);
 
 	dev_dbg(&client->dev, "\n");