[PATCH -next] drm/tilcdc: Fix non static symbol warning

[Wei Yongjun]

From: Wei Yongjun <weiyongjun1@xxxxxxxxxx>

Fixes the following sparse warning:

drivers/gpu/drm/tilcdc/tilcdc_drv.c:64:5: warning:
 symbol 'tilcdc_atomic_check' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/gpu/drm/tilcdc/tilcdc_drv.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 4405e4b..dc58770 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -61,8 +61,8 @@ static void tilcdc_fb_output_poll_changed(struct drm_device *dev)
 	drm_fbdev_cma_hotplug_event(priv->fbdev);
 }
 
-int tilcdc_atomic_check(struct drm_device *dev,
-			struct drm_atomic_state *state)
+static int tilcdc_atomic_check(struct drm_device *dev,
+			       struct drm_atomic_state *state)
 {
 	int ret;