[media] dvb-frontends: 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/dvb-frontends/tda10048.h b/drivers/media/dvb-frontends/tda10048.h
index fb2ef5a..5e7bf4e 100644
--- a/drivers/media/dvb-frontends/tda10048.h
+++ b/drivers/media/dvb-frontends/tda10048.h
@@ -22,6 +22,7 @@
 #ifndef TDA10048_H
 #define TDA10048_H
 
+#include <linux/kconfig.h>
 #include <linux/dvb/frontend.h>
 #include <linux/firmware.h>
 
@@ -72,8 +73,7 @@
 	u8 pll_n;
 };
 
-#if defined(CONFIG_DVB_TDA10048) || \
-	(defined(CONFIG_DVB_TDA10048_MODULE) && defined(MODULE))
+#if IS_ENABLED(CONFIG_DVB_TDA10048)
 extern struct dvb_frontend *tda10048_attach(
 	const struct tda10048_config *config,
 	struct i2c_adapter *i2c);