drm/ingenic: Don't set struct drm_driver.output_poll_changed

Don't set struct drm_driver.output_poll_changed. It's used to restore
the fbdev console. But as ingenic uses generic fbdev emulation, the
console is being restored by the DRM client helpers already. See the
functions drm_kms_helper_hotplug_event() and
drm_kms_helper_connector_hotplug_event() in drm_probe_helper.c.

v2:
	* fix commit description (Christian, Sergey)
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221103151446.2638-7-tzimmermann@suse.de

drivers/gpu/drm/ingenic/ingenic-drm-drv.c

@@ -1018,7 +1018,6 @@ static const struct drm_bridge_funcs ingenic_drm_bridge_funcs = {
 
 static const struct drm_mode_config_funcs ingenic_drm_mode_config_funcs = {
 	.fb_create		= ingenic_drm_gem_fb_create,
-	.output_poll_changed	= drm_fb_helper_output_poll_changed,
 	.atomic_check		= drm_atomic_helper_check,
 	.atomic_commit		= drm_atomic_helper_commit,
 };