drm/i915/dp: correct eDP lane count and bpp

With the old check we'd never set lane_count or bpp to different values
on PCH attached eDP panels.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1b73663..714e553 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -672,8 +672,10 @@
 		intel_dp = enc_to_intel_dp(encoder);
 		if (intel_dp->base.type == INTEL_OUTPUT_DISPLAYPORT) {
 			lane_count = intel_dp->lane_count;
-			if (is_pch_edp(intel_dp))
-				bpp = dev_priv->edp.bpp;
+			break;
+		} else if (is_edp(intel_dp)) {
+			lane_count = dev_priv->edp.lanes;
+			bpp = dev_priv->edp.bpp;
 			break;
 		}
 	}