drm/displayid: move drm_displayid.h to drm_displayd_internal.h

There are no exported symbols for displayid, and it's all internal
interfaces. Move the header to drivers/gpu/drm/drm_displayd_internal.h.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/220713d4e3cc364ac103ba689065ae96e075f1fa.1713259151.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/drm_displayid.c

@@ -3,10 +3,11 @@
  * Copyright © 2021 Intel Corporation
  */
 
-#include <drm/drm_displayid.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_print.h>
 
+#include "drm_displayid_internal.h"
+
 static const struct displayid_header *
 displayid_get_header(const u8 *displayid, int length, int index)
 {

include/drm/drm_displayid.h → drivers/gpu/drm/drm_displayid_internal.h

@@ -19,8 +19,9 @@
  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  * OTHER DEALINGS IN THE SOFTWARE.
  */
-#ifndef DRM_DISPLAYID_H
-#define DRM_DISPLAYID_H
+
+#ifndef __DRM_DISPLAYID_INTERNAL_H__
+#define __DRM_DISPLAYID_INTERNAL_H__
 
 #include <linux/types.h>
 #include <linux/bits.h>

drivers/gpu/drm/drm_edid.c

@@ -40,7 +40,6 @@
 #include <linux/slab.h>
 #include <linux/vga_switcheroo.h>
 
-#include <drm/drm_displayid.h>
 #include <drm/drm_drv.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_eld.h>
@@ -48,6 +47,7 @@
 #include <drm/drm_print.h>
 
 #include "drm_crtc_internal.h"
+#include "drm_displayid_internal.h"
 #include "drm_internal.h"
 
 static int oui(u8 first, u8 second, u8 third)