V4L/DVB (8656): fix DVB_FE_CUSTOMISE for DVB_DIB7000P and DVB_TUNER_DIB0070 with dvb-usb-cxusb

Allow dvb-usb-cxusb to be built without dib7000p or dib0070 selected

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/dib0070.h b/drivers/media/dvb/frontends/dib0070.h
index 3eedfdf..21f2c51 100644
--- a/drivers/media/dvb/frontends/dib0070.h
+++ b/drivers/media/dvb/frontends/dib0070.h
@@ -41,6 +41,7 @@
 extern struct dvb_frontend *dib0070_attach(struct dvb_frontend *fe,
 					   struct i2c_adapter *i2c,
 					   struct dib0070_config *cfg);
+extern u16 dib0070_wbd_offset(struct dvb_frontend *);
 #else
 static inline struct dvb_frontend *dib0070_attach(struct dvb_frontend *fe,
 						  struct i2c_adapter *i2c,
@@ -49,9 +50,14 @@
 	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 	return NULL;
 }
+
+static inline u16 dib0070_wbd_offset(struct dvb_frontend *fe)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return -ENODEV;
+}
 #endif
 
 extern void dib0070_ctrl_agc_filter(struct dvb_frontend *, uint8_t open);
-extern u16 dib0070_wbd_offset(struct dvb_frontend *);
 
 #endif