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/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index aacbb76..b47cce8 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -753,7 +753,7 @@
 
 	hp = tcp_get_md5sig_pool();
 	if (!hp) {
-		printk(KERN_WARNING "%s(): hash pool not found...\n", __FUNCTION__);
+		printk(KERN_WARNING "%s(): hash pool not found...\n", __func__);
 		goto clear_hash_noput;
 	}
 	bp = &hp->md5_blk.ip6;
@@ -793,17 +793,17 @@
 	/* Now store the hash into the packet */
 	err = crypto_hash_init(desc);
 	if (err) {
-		printk(KERN_WARNING "%s(): hash_init failed\n", __FUNCTION__);
+		printk(KERN_WARNING "%s(): hash_init failed\n", __func__);
 		goto clear_hash;
 	}
 	err = crypto_hash_update(desc, sg, nbytes);
 	if (err) {
-		printk(KERN_WARNING "%s(): hash_update failed\n", __FUNCTION__);
+		printk(KERN_WARNING "%s(): hash_update failed\n", __func__);
 		goto clear_hash;
 	}
 	err = crypto_hash_final(desc, md5_hash);
 	if (err) {
-		printk(KERN_WARNING "%s(): hash_final failed\n", __FUNCTION__);
+		printk(KERN_WARNING "%s(): hash_final failed\n", __func__);
 		goto clear_hash;
 	}