drm/xe: stop including intel_display_{core, device}.h from xe_device_types.h

Make xe->display pointer opaque to most of core xe driver. A few places
now need explicit include of intel_display_core.h.

With this dependency broken, changes in display should cause radically
less recompilation of xe.

Acked-by: Lucas De Marchi <[e-mail]>
Reviewed-by: Chaitanya Kumar Borah <[e-mail]>
Link: https://lore.kernel.org/r/a12[e-mail]
Signed-off-by: Jani Nikula <[e-mail]>

drivers/gpu/drm/xe/display/intel_fbdev_fb.c

···
 
 #include <drm/drm_fb_helper.h>
 
+#include "intel_display_core.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fbdev_fb.h"

drivers/gpu/drm/xe/display/xe_display.c

···
 #include "intel_audio.h"
 #include "intel_bw.h"
 #include "intel_display.h"
+#include "intel_display_core.h"
 #include "intel_display_driver.h"
 #include "intel_display_irq.h"
 #include "intel_display_types.h"

drivers/gpu/drm/xe/display/xe_display_rpm.c

···
 // SPDX-License-Identifier: MIT
 /* Copyright © 2025 Intel Corporation */
 
+#include "intel_display_core.h"
 #include "intel_display_rpm.h"
 #include "xe_device.h"
 #include "xe_device_types.h"

drivers/gpu/drm/xe/display/xe_display_wa.c

···
  * Copyright © 2024 Intel Corporation
  */
 
+#include "intel_display_core.h"
 #include "intel_display_wa.h"
-
 #include "xe_device.h"
 #include "xe_wa.h"
 

drivers/gpu/drm/xe/display/xe_fb_pin.c

···
 #include <drm/ttm/ttm_bo.h>
 
 #include "i915_vma.h"
+#include "intel_display_core.h"
 #include "intel_display_types.h"
 #include "intel_dpt.h"
 #include "intel_fb.h"

drivers/gpu/drm/xe/display/xe_plane_initial.c

···
 #include "intel_atomic_plane.h"
 #include "intel_crtc.h"
 #include "intel_display.h"
+#include "intel_display_core.h"
 #include "intel_display_types.h"
 #include "intel_fb.h"
 #include "intel_fb_pin.h"

drivers/gpu/drm/xe/display/xe_tdf.c

···
  * Copyright © 2024 Intel Corporation
  */
 
-#include "xe_device.h"
-#include "intel_display_types.h"
+#include "intel_display_core.h"
 #include "intel_tdf.h"
+#include "xe_device.h"
 
 void intel_td_flush(struct intel_display *display)
 {

drivers/gpu/drm/xe/xe_device_types.h

···
 #define TEST_VM_OPS_ERROR
 #endif
 
-#if IS_ENABLED(CONFIG_DRM_XE_DISPLAY)
-#include "intel_display_core.h"
-#include "intel_display_device.h"
-#endif
-
+struct intel_display;
 struct xe_ggtt;
 struct xe_pat_ops;
 struct xe_pxp;