atm: replace remaining __FUNCTION__ occurrences

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index c662d68..47c57a4 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -331,8 +331,8 @@
 #define FS_DEBUG_QSIZE   0x00001000
 
 
-#define func_enter() fs_dprintk (FS_DEBUG_FLOW, "fs: enter %s\n", __FUNCTION__)
-#define func_exit()  fs_dprintk (FS_DEBUG_FLOW, "fs: exit  %s\n", __FUNCTION__)
+#define func_enter() fs_dprintk(FS_DEBUG_FLOW, "fs: enter %s\n", __func__)
+#define func_exit()  fs_dprintk(FS_DEBUG_FLOW, "fs: exit  %s\n", __func__)
 
 
 static struct fs_dev *fs_boards = NULL;