ozone: Add atomic initialization path

ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h

Index: ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h
diff --git a/ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h b/ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h
index 415961164485cac69eb5261d71349fa957554fa8..b699f634e385ebbdb5d62bc6d0da8246642e7760 100644
--- a/ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h
+++ b/ui/ozone/platform/drm/gpu/hardware_display_plane_atomic.h
@@ -11,6 +11,7 @@
 
 namespace ui {
 
+class CrtcController;
 class DrmDevice;
 
 class HardwareDisplayPlaneAtomic : public HardwareDisplayPlane {
@@ -27,6 +28,9 @@ class HardwareDisplayPlaneAtomic : public HardwareDisplayPlane {
   // HardwareDisplayPlane:
   bool Initialize(DrmDevice* drm) override;
 
+  void set_crtc(CrtcController* crtc) { crtc_ = crtc; }
+  CrtcController* crtc() const { return crtc_; }
+
  private:
   struct Property {
     Property();
@@ -46,6 +50,7 @@ class HardwareDisplayPlaneAtomic : public HardwareDisplayPlane {
   Property src_y_prop_;
   Property src_w_prop_;
   Property src_h_prop_;
+  CrtcController* crtc_;
 };
 
 }  // namespace ui