[PATCH -next] soc: mediatek: Make symbol 'mtk_mutex_driver' static

[Wei Yongjun <weiyongjun1@huawei.com>]

The sparse tool complains as follows:

drivers/soc/mediatek/mtk-mutex.c:464:24: warning:
 symbol 'mtk_mutex_driver' was not declared. Should it be static?

This symbol is not used outside of mtk-mutex.c, so this
commit marks it static.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
 drivers/soc/mediatek/mtk-mutex.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/mediatek/mtk-mutex.c b/drivers/soc/mediatek/mtk-mutex.c
index f531b119da7a..3a315a62e783 100644
--- a/drivers/soc/mediatek/mtk-mutex.c
+++ b/drivers/soc/mediatek/mtk-mutex.c
@@ -461,7 +461,7 @@ static const struct of_device_id mutex_driver_dt_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mutex_driver_dt_match);
 
-struct platform_driver mtk_mutex_driver = {
+static struct platform_driver mtk_mutex_driver = {
 	.probe		= mtk_mutex_probe,
 	.remove		= mtk_mutex_remove,
 	.driver		= {