[MTD] replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/drivers/mtd/ubi/debug.h b/drivers/mtd/ubi/debug.h
index 51c40b1..8ac7d87 100644
--- a/drivers/mtd/ubi/debug.h
+++ b/drivers/mtd/ubi/debug.h
@@ -41,7 +41,7 @@
 /* Generic debugging message */
 #define dbg_msg(fmt, ...)                                    \
 	printk(KERN_DEBUG "UBI DBG (pid %d): %s: " fmt "\n", \
-	       current->pid, __FUNCTION__, ##__VA_ARGS__)
+	       current->pid, __func__, ##__VA_ARGS__)
 
 #define ubi_dbg_dump_stack() dump_stack()