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>

net/9p/error.c

@@ -230,7 +230,7 @@ int p9_errstr2errno(char *errstr, int len)
 	if (errno == 0) {
 		/* TODO: if error isn't found, add it dynamically */
 		errstr[len] = 0;
-		printk(KERN_ERR "%s: errstr :%s: not found\n", __FUNCTION__,
+		printk(KERN_ERR "%s: errstr :%s: not found\n", __func__,
 		       errstr);
 		errno = 1;
 	}