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/sctp/input.c b/net/sctp/input.c
index 57fe2f8..4db5a75 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -409,7 +409,7 @@
 			   struct sctp_association *asoc,
 			   struct sctp_transport *t)
 {
-	SCTP_DEBUG_PRINTK("%s\n",  __FUNCTION__);
+	SCTP_DEBUG_PRINTK("%s\n",  __func__);
 
 	sctp_do_sm(SCTP_EVENT_T_OTHER,
 		   SCTP_ST_OTHER(SCTP_EVENT_ICMP_PROTO_UNREACH),