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

Fixes the compile-time warnings

  drivers/gpu/drm/clients/drm_client_setup.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_client.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_client_event.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_client_modeset.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_fb_helper.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_fbdev_dma.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_fbdev_shmem.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing
  drivers/gpu/drm/drm_fbdev_ttm.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/20250612121633.229222-5-tzimmermann@suse.de

drivers/gpu/drm/clients/drm_client_setup.c

@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: MIT
 
+#include <linux/export.h>
+
 #include <drm/clients/drm_client_setup.h>
 #include <drm/drm_device.h>
 #include <drm/drm_fourcc.h>

drivers/gpu/drm/drm_client.c

@@ -3,6 +3,7 @@
  * Copyright 2018 Noralf Trønnes
  */
 
+#include <linux/export.h>
 #include <linux/iosys-map.h>
 #include <linux/list.h>
 #include <linux/mutex.h>

drivers/gpu/drm/drm_client_event.c

@@ -3,6 +3,7 @@
  * Copyright 2018 Noralf Trønnes
  */
 
+#include <linux/export.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/seq_file.h>

drivers/gpu/drm/drm_client_modeset.c

@@ -8,6 +8,8 @@
  */
 
 #include "drm/drm_modeset_lock.h"
+
+#include <linux/export.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>

drivers/gpu/drm/drm_fb_helper.c

@@ -30,6 +30,7 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/console.h>
+#include <linux/export.h>
 #include <linux/pci.h>
 #include <linux/sysrq.h>
 #include <linux/vga_switcheroo.h>

drivers/gpu/drm/drm_fbdev_dma.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: MIT
 
+#include <linux/export.h>
 #include <linux/fb.h>
 #include <linux/vmalloc.h>
 

drivers/gpu/drm/drm_fbdev_shmem.c

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

drivers/gpu/drm/drm_fbdev_ttm.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: MIT
 
+#include <linux/export.h>
 #include <linux/moduleparam.h>
 #include <linux/vmalloc.h>