drm: Define some new standard TV properties.

Namely "brightness", "contrast" and "flicker reduction".

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 125994d..5f2cc0c 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -572,6 +572,9 @@
 	struct drm_property *tv_right_margin_property;
 	struct drm_property *tv_top_margin_property;
 	struct drm_property *tv_bottom_margin_property;
+	struct drm_property *tv_brightness_property;
+	struct drm_property *tv_contrast_property;
+	struct drm_property *tv_flicker_reduction_property;
 
 	/* Optional properties */
 	struct drm_property *scaling_mode_property;