drm/fbdev-client: Unexport drm_fbdev_client_setup()

DRM drivers invoke drm_client_setup() to set up in-kernel clients.
No driver should call drm_fbdev_client_setup() directly. Therefore,
unexport the symbol and move the declaration to the internal header
drm_client_internal.h.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241108154600.126162-4-tzimmermann@suse.de

drivers/gpu/drm/clients/drm_client_internal.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: MIT */
 
-#ifndef DRM_FBDEV_CLIENT_H
-#define DRM_FBDEV_CLIENT_H
+#ifndef DRM_CLIENT_INTERNAL_H
+#define DRM_CLIENT_INTERNAL_H
 
 struct drm_device;
 struct drm_format_info;

drivers/gpu/drm/clients/drm_client_setup.c

@@ -2,10 +2,11 @@
 
 #include <drm/clients/drm_client_setup.h>
 #include <drm/drm_device.h>
-#include <drm/drm_fbdev_client.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_print.h>
 
+#include "drm_client_internal.h"
+
 /**
  * drm_client_setup() - Setup in-kernel DRM clients
  * @dev: DRM device

drivers/gpu/drm/clients/drm_fbdev_client.c

@@ -3,11 +3,12 @@
 #include <drm/drm_client.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_drv.h>
-#include <drm/drm_fbdev_client.h>
 #include <drm/drm_fb_helper.h>
 #include <drm/drm_fourcc.h>
 #include <drm/drm_print.h>
 
+#include "drm_client_internal.h"
+
 /*
  * struct drm_client_funcs
  */
@@ -164,4 +165,3 @@ err_drm_client_init:
 	kfree(fb_helper);
 	return ret;
 }
-EXPORT_SYMBOL(drm_fbdev_client_setup);