Fix sparse warning:

drivers/gpu/drm/bridge/analogix/analogix_dp_core.c:1151:5: warning:
 symbol 'analogix_dp_atomic_check' was not declared. Should it be static?

Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c 
b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index c82c7d5..f2f7f69 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1148,8 +1148,8 @@ analogix_dp_best_encoder(struct drm_connector *connector)
 }
 
 
-int analogix_dp_atomic_check(struct drm_connector *connector,
-                            struct drm_atomic_state *state)
+static int analogix_dp_atomic_check(struct drm_connector *connector,
+                                   struct drm_atomic_state *state)
 {
        struct analogix_dp_device *dp = to_dp(connector);
        struct drm_connector_state *conn_state;
-- 
2.7.4


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