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

[weiyj_lk]

From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

Fixes the following sparse warning:

drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c:107:5: warning:
 symbol 'ade_get_channel_formats' was not declared. Should it be static?

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
index 805f432..2a913cc 100644
--- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
+++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_ade.c
@@ -104,7 +104,7 @@ static const u32 channel_formats1[] = {
 	DRM_FORMAT_ABGR8888
 };
 
-u32 ade_get_channel_formats(u8 ch, const u32 **formats)
+static u32 ade_get_channel_formats(u8 ch, const u32 **formats)
 {
 	switch (ch) {
 	case ADE_CH1: