imx-drm: encoder prepare/mode_set must use adjusted mode

The encoder ->prepare() and ->mode_set() methods need to use the
hw adjusted mode, not the original mode.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index 4cc4569..6ea0005 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -1341,8 +1341,8 @@
 }
 
 static void dw_hdmi_bridge_mode_set(struct drm_bridge *bridge,
-				    struct drm_display_mode *mode,
-				    struct drm_display_mode *adjusted_mode)
+				    struct drm_display_mode *orig_mode,
+				    struct drm_display_mode *mode)
 {
 	struct dw_hdmi *hdmi = bridge->driver_private;