[PATCH -next] soc / drm: mediatek: Mark mtk_mutex_driver with static keyword

[Zou Wei]

Fix the following sparse warning:

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

Signed-off-by: Zou Wei <zou_...@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 f531b11..3a315a6 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         = {
-- 
2.6.2