V4L/DVB (6425): Add experimental DVB frontend tuner interface to xc2028/3028

Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/tuner-xc2028.h b/drivers/media/video/tuner-xc2028.h
index 7c540c3..34ff4cb 100644
--- a/drivers/media/video/tuner-xc2028.h
+++ b/drivers/media/video/tuner-xc2028.h
@@ -7,3 +7,8 @@
 /* xc2028 commands for callback */
 #define XC2028_TUNER_RESET	0
 #define XC2028_RESET_CLK	1
+
+struct dvb_frontend;
+struct i2c_client;
+
+int xc2028_attach(struct i2c_client *c, struct dvb_frontend *fe);