V4L/DVB (7514): media/dvb/frontends replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/frontends/sp8870.h b/drivers/media/dvb/frontends/sp8870.h
index 909cefe..a764a79 100644
--- a/drivers/media/dvb/frontends/sp8870.h
+++ b/drivers/media/dvb/frontends/sp8870.h
@@ -42,7 +42,7 @@
 static inline struct dvb_frontend* sp8870_attach(const struct sp8870_config* config,
 					  struct i2c_adapter* i2c)
 {
-	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
 	return NULL;
 }
 #endif // CONFIG_DVB_SP8870