gma500/cdv: sync up and add the displayport code to the build

This is mostly just aligning bits of behaviour

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/gma500/Makefile b/drivers/gpu/drm/gma500/Makefile
index abfa2a93..56a0f2a 100644
--- a/drivers/gpu/drm/gma500/Makefile
+++ b/drivers/gpu/drm/gma500/Makefile
@@ -30,7 +30,8 @@
 	  cdv_intel_crt.o \
 	  cdv_intel_display.o \
 	  cdv_intel_hdmi.o \
-	  cdv_intel_lvds.o
+	  cdv_intel_lvds.o \
+	  cdv_intel_dp.o
 
 gma500_gfx-$(CONFIG_DRM_GMA600) += oaktrail_device.o \
 	  oaktrail_crtc.o \