[PATCH 5.13 394/800] drm/bridge: fix LONTIUM_LT8912B dependencies

[Greg Kroah-Hartman]

From: Adrien Grassein <adrien.grassein@xxxxxxxxx>

[ Upstream commit 660729e494b6ee64feb97b41f3092c32a41c7dae ]

LONTIUM_LT8912B uses "drm_display_mode_to_videomode" from
DRM framework that needs VIDEOMODE_HELPERS to be enabled.

Fixes: 30e2ae943c26 ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Reported-by: Michal Suchánek <msuchanek@xxxxxxx>
Signed-off-by: Adrien Grassein <adrien.grassein@xxxxxxxxx>
Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx>
Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20210504220207.4004511-1-adrien.grassein@xxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/gpu/drm/bridge/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index eb3eebab4f27..9ce8438fb58b 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -68,6 +68,7 @@ config DRM_LONTIUM_LT8912B
 	select DRM_KMS_HELPER
 	select DRM_MIPI_DSI
 	select REGMAP_I2C
+	select VIDEOMODE_HELPERS
 	help
 	  Driver for Lontium LT8912B DSI to HDMI bridge
 	  chip driver.
-- 
2.30.2