V4L/DVB (7523): media/video/et61x251 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>

drivers/media/video/et61x251/et61x251.h

@@ -199,7 +199,7 @@ do {                                                                          \
 			dev_info(&cam->usbdev->dev, fmt "\n", ## args);       \
 		else if ((level) >= 3)                                        \
 			dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n",   \
-				 __FILE__, __FUNCTION__, __LINE__ , ## args); \
+				 __FILE__, __func__, __LINE__ , ## args); \
 	}                                                                     \
 } while (0)
 #	define KDBG(level, fmt, args...)                                      \
@@ -209,7 +209,7 @@ do {                                                                          \
 			pr_info("et61x251: " fmt "\n", ## args);              \
 		else if ((level) == 3)                                        \
 			pr_debug("sn9c102: [%s:%s:%d] " fmt "\n", __FILE__,   \
-				 __FUNCTION__, __LINE__ , ## args);           \
+				 __func__, __LINE__ , ## args);           \
 	}                                                                     \
 } while (0)
 #	define V4LDBG(level, name, cmd)                                       \
@@ -225,7 +225,7 @@ do {                                                                          \
 
 #undef PDBG
 #define PDBG(fmt, args...)                                                    \
-dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", __FILE__, __FUNCTION__,   \
+dev_info(&cam->usbdev->dev, "[%s:%s:%d] " fmt "\n", __FILE__, __func__,   \
 	 __LINE__ , ## args)
 
 #undef PDBGG