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/ov511.h b/drivers/media/video/ov511.h
index 18c6422..1010e51 100644
--- a/drivers/media/video/ov511.h
+++ b/drivers/media/video/ov511.h
@@ -12,7 +12,7 @@
 #ifdef OV511_DEBUG
 	#define PDEBUG(level, fmt, args...) \
 		if (debug >= (level)) info("[%s:%d] " fmt, \
-		__FUNCTION__, __LINE__ , ## args)
+		__func__, __LINE__ , ## args)
 #else
 	#define PDEBUG(level, fmt, args...) do {} while(0)
 #endif