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/fore200e.c b/drivers/atm/fore200e.c
index f97e050..9427a61 100644
--- a/drivers/atm/fore200e.c
+++ b/drivers/atm/fore200e.c
@@ -95,8 +95,8 @@
 #if 1
 #define ASSERT(expr)     if (!(expr)) { \
 			     printk(FORE200E "assertion failed! %s[%d]: %s\n", \
-				    __FUNCTION__, __LINE__, #expr); \
-			     panic(FORE200E "%s", __FUNCTION__); \
+				    __func__, __LINE__, #expr); \
+			     panic(FORE200E "%s", __func__); \
 			 }
 #else
 #define ASSERT(expr)     do {} while (0)