V4L/DVB (7518): media/video/ replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/tuner-simple.c b/drivers/media/video/tuner-simple.c
index 8d6d2c8..be8d903 100644
--- a/drivers/media/video/tuner-simple.c
+++ b/drivers/media/video/tuner-simple.c
@@ -999,7 +999,7 @@
 
 	if (type >= tuner_count) {
 		printk(KERN_WARNING "%s: invalid tuner type: %d (max: %d)\n",
-		       __FUNCTION__, type, tuner_count-1);
+		       __func__, type, tuner_count-1);
 		return NULL;
 	}