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/discovery.c b/net/irda/discovery.c
index 80c33f4..bfacef8 100644
--- a/net/irda/discovery.c
+++ b/net/irda/discovery.c
@@ -110,7 +110,7 @@
 {
 	discovery_t *discovery;
 
-	IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+	IRDA_DEBUG(4, "%s()\n", __func__);
 
 	/*
 	 *  If log is missing this means that IrLAP was unable to perform the
@@ -157,7 +157,7 @@
 	int			i = 0;		/* How many we expired */
 
 	IRDA_ASSERT(log != NULL, return;);
-	IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+	IRDA_DEBUG(4, "%s()\n", __func__);
 
 	spin_lock_irqsave(&log->hb_spinlock, flags);