net: 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/net/irda/irmod.c b/net/irda/irmod.c
index 01554b9..4c487a8 100644
--- a/net/irda/irmod.c
+++ b/net/irda/irmod.c
@@ -90,7 +90,7 @@
 {
 	int ret = 0;
 
-	IRDA_DEBUG(0, "%s()\n", __FUNCTION__);
+	IRDA_DEBUG(0, "%s()\n", __func__);
 
 	/* Lower layer of the stack */
 	irlmp_init();