x25: convert printks to pr_<level>

use pr_<level> instead of printk(LEVEL)

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Wang Weidong <wangweidong1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 7622789..c8a8297 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -35,6 +35,8 @@
  *					response
  */
 
+#define pr_fmt(fmt) "X25: " fmt
+
 #include <linux/module.h>
 #include <linux/capability.h>
 #include <linux/errno.h>
@@ -1809,7 +1811,7 @@
 	if (rc != 0)
 		goto out_sock;
 
-	printk(KERN_INFO "X.25 for Linux Version 0.2\n");
+	pr_info("Linux Version 0.2\n");
 
 	x25_register_sysctl();
 	rc = x25_proc_init();