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 <[e-mail]>
Reviewed-by: Jocelyn Falempe <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/clients/drm_client_setup.c

···
 
 #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

drivers/gpu/drm/clients/drm_fbdev_client.c

···
 #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
···
 	kfree(fb_helper);
 	return ret;
 }
-EXPORT_SYMBOL(drm_fbdev_client_setup);

include/drm/drm_fbdev_client.h drivers/gpu/drm/clients/drm_client_internal.h

···
 /* 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;