[PATCH -next] jump_label: Fix non static symbol warning

[weiyj_lk]

From: Wei Yongjun <yongjun_...@trendmicro.com.cn>

Fixes the following sparse warnings:

kernel/jump_label.c:473:23: warning:
 symbol 'jump_label_module_nb' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.com.cn>
---
 kernel/jump_label.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 3c67e5e..6077b3b 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -470,7 +470,7 @@ jump_label_module_notify(struct notifier_block *self, 
unsigned long val,
        return notifier_from_errno(ret);
 }
 
-struct notifier_block jump_label_module_nb = {
+static struct notifier_block jump_label_module_nb = {
        .notifier_call = jump_label_module_notify,
        .priority = 1, /* higher than tracepoints */
 };