drm/nv50/kms: create ctxdma objects for framebuffers as required

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_crtc.h b/drivers/gpu/drm/nouveau/nouveau_crtc.h
index a053448..a7cbbe9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_crtc.h
+++ b/drivers/gpu/drm/nouveau/nouveau_crtc.h
@@ -46,7 +46,7 @@
 		int cpp;
 		bool blanked;
 		uint32_t offset;
-		uint32_t tile_flags;
+		uint32_t handle;
 	} fb;
 
 	struct {