[media] mn88472: correct attach symbol name

Wrong symbol name causes demod attach failure.
Reported-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/dvb-frontends/mn88472.h

@@ -28,12 +28,12 @@ struct mn88472_c_config {
 };
 
 #if IS_ENABLED(CONFIG_DVB_MN88472)
-extern struct dvb_frontend *mn88472_c_attach(
+extern struct dvb_frontend *mn88472_attach_c(
 	const struct mn88472_c_config *cfg,
 	struct i2c_adapter *i2c
 );
 #else
-static inline struct dvb_frontend *mn88472_c_attach(
+static inline struct dvb_frontend *mn88472_attach_c(
 	const struct mn88472_c_config *cfg,
 	struct i2c_adapter *i2c
 )