drm/radeon/kms: fix panel scaling adjusted mode setup

This should duplicate exactly what the ddx does for both
legacy and avivo.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index 2441cca..0274abe 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -228,16 +228,8 @@
 	drm_mode_set_crtcinfo(adjusted_mode, 0);
 
 	/* get the native mode for LVDS */
-	if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT)) {
-		struct drm_display_mode *native_mode = &radeon_encoder->native_mode;
-		int mode_id = adjusted_mode->base.id;
-		*adjusted_mode = *native_mode;
-		adjusted_mode->hdisplay = mode->hdisplay;
-		adjusted_mode->vdisplay = mode->vdisplay;
-		adjusted_mode->crtc_hdisplay = mode->hdisplay;
-		adjusted_mode->crtc_vdisplay = mode->vdisplay;
-		adjusted_mode->base.id = mode_id;
-	}
+	if (radeon_encoder->active_device & (ATOM_DEVICE_LCD_SUPPORT))
+		radeon_panel_mode_fixup(encoder, adjusted_mode);
 
 	return true;
 }