drm/display: Include <linux/export.h>

Fix the compile-time warnings

  drivers/gpu/drm/display/drm_bridge_connector.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dp_aux_bus.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dp_cec.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dp_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dp_mst_topology.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dp_tunnel.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_dsc_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_hdmi_audio_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_hdmi_cec_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_hdmi_cec_notifier_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_hdmi_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_hdmi_state_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/display/drm_scdc_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Fixes: a934a57a42 ("scripts/misc-check: check missing #include <linux/export.h> when W=1")
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20250612121633.229222-6-tzimmermann@suse.de

drivers/gpu/drm/display/drm_bridge_connector.c

@@ -3,6 +3,7 @@
  * Copyright (C) 2019 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  */
 
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>

drivers/gpu/drm/display/drm_dp_aux_bus.c

@@ -12,6 +12,7 @@
  * to perform transactions on that bus.
  */
 
+#include <linux/export.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>

drivers/gpu/drm/display/drm_dp_cec.c

@@ -5,6 +5,7 @@
  * Copyright 2018 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
  */
 
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>

drivers/gpu/drm/display/drm_dp_helper.c

@@ -24,6 +24,7 @@
 #include <linux/delay.h>
 #include <linux/dynamic_debug.h>
 #include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
 #include <linux/iopoll.h>

drivers/gpu/drm/display/drm_dp_mst_topology.c

@@ -23,6 +23,7 @@
 #include <linux/bitfield.h>
 #include <linux/delay.h>
 #include <linux/errno.h>
+#include <linux/export.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
 #include <linux/kernel.h>

drivers/gpu/drm/display/drm_dp_tunnel.c

@@ -3,6 +3,7 @@
  * Copyright © 2023 Intel Corporation
  */
 
+#include <linux/export.h>
 #include <linux/ref_tracker.h>
 #include <linux/types.h>
 

drivers/gpu/drm/display/drm_dsc_helper.c

@@ -6,6 +6,7 @@
  * Manasi Navare <manasi.d.navare@intel.com>
  */
 
+#include <linux/export.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>

drivers/gpu/drm/display/drm_hdmi_audio_helper.c

@@ -3,6 +3,7 @@
  * Copyright (c) 2024 Linaro Ltd
  */
 
+#include <linux/export.h>
 #include <linux/mutex.h>
 #include <linux/of_graph.h>
 #include <linux/platform_device.h>

drivers/gpu/drm/display/drm_hdmi_cec_helper.c

@@ -8,6 +8,7 @@
 #include <drm/drm_managed.h>
 #include <drm/display/drm_hdmi_cec_helper.h>
 
+#include <linux/export.h>
 #include <linux/mutex.h>
 
 #include <media/cec.h>

drivers/gpu/drm/display/drm_hdmi_cec_notifier_helper.c

@@ -8,6 +8,7 @@
 #include <drm/drm_managed.h>
 #include <drm/display/drm_hdmi_cec_helper.h>
 
+#include <linux/export.h>
 #include <linux/mutex.h>
 
 #include <media/cec.h>

drivers/gpu/drm/display/drm_hdmi_helper.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: MIT
 
+#include <linux/export.h>
 #include <linux/module.h>
 
 #include <drm/display/drm_hdmi_helper.h>

drivers/gpu/drm/display/drm_hdmi_state_helper.c

@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: MIT
 
+#include <linux/export.h>
+
 #include <drm/drm_atomic.h>
 #include <drm/drm_connector.h>
 #include <drm/drm_edid.h>

drivers/gpu/drm/display/drm_scdc_helper.c

@@ -21,6 +21,7 @@
  * DEALINGS IN THE SOFTWARE.
  */
 
+#include <linux/export.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/delay.h>