drm/i915: parse eDP panel color depth from VBT block

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 5f781a7..2c16694 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -283,6 +283,7 @@
 	unsigned int lvds_use_ssc:1;
 	unsigned int edp_support:1;
 	int lvds_ssc_freq;
+	int edp_bpp;
 
 	struct notifier_block lid_notifier;