[media] tuners: use IS_ENABLED

Instead of checking everywhere there for 3 symbols, use instead
IS_ENABLED macro.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/tuners/tua9001.h b/drivers/media/tuners/tua9001.h
index cf5b815..26358da 100644
--- a/drivers/media/tuners/tua9001.h
+++ b/drivers/media/tuners/tua9001.h
@@ -21,6 +21,7 @@
 #ifndef TUA9001_H
 #define TUA9001_H
 
+#include <linux/kconfig.h>
 #include "dvb_frontend.h"
 
 struct tua9001_config {
@@ -50,8 +51,7 @@
 #define TUA9001_CMD_RESETN  1
 #define TUA9001_CMD_RXEN    2
 
-#if defined(CONFIG_MEDIA_TUNER_TUA9001) || \
-	(defined(CONFIG_MEDIA_TUNER_TUA9001_MODULE) && defined(MODULE))
+#if IS_ENABLED(CONFIG_MEDIA_TUNER_TUA9001)
 extern struct dvb_frontend *tua9001_attach(struct dvb_frontend *fe,
 		struct i2c_adapter *i2c, struct tua9001_config *cfg);
 #else