Revert "drm/nvc0: recognise 0xdX chipsets as NV_C0"

Oh boy.  That was a bad gamble.  PDISP has changed.

This reverts commit cdf81a23.
Signed-off-by: NDave Airlie <airlied@redhat.com>

drivers/gpu/drm/nouveau/nouveau_state.c

@@ -371,7 +371,6 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
 		engine->vram.flags_valid	= nv50_vram_flags_valid;
 		break;
 	case 0xC0:
-	case 0xD0:
 		engine->instmem.init		= nvc0_instmem_init;
 		engine->instmem.takedown	= nvc0_instmem_takedown;
 		engine->instmem.suspend		= nvc0_instmem_suspend;
@@ -923,7 +922,6 @@ int nouveau_load(struct drm_device *dev, unsigned long flags)
 		dev_priv->card_type = NV_50;
 		break;
 	case 0xc0:
-	case 0xd0:
 		dev_priv->card_type = NV_C0;
 		break;
 	default: