rcar_du_kms.c:781:24: error: passing argument 1 of '__drmm_add_action' from incompatible pointer type

[Naresh Kamboju]

On stable rc 5.11 the x86_64 build failed due to below errors/warnings.

drivers/gpu/drm/rcar-du/rcar_du_kms.c: In function 'rcar_du_modeset_cleanup':
drivers/gpu/drm/rcar-du/rcar_du_kms.c:754:32: error: implicit
declaration of function 'to_rcar_du_device'; did you mean
'to_rtc_device'? [-Werror=implicit-function-declaration]
  struct rcar_du_device *rcdu = to_rcar_du_device(dev);
                                ^~~~~~~~~~~~~~~~~
                                to_rtc_device
drivers/gpu/drm/rcar-du/rcar_du_kms.c:754:32: warning: initialization
makes pointer from integer without a cast [-Wint-conversion]
In file included from drivers/gpu/drm/rcar-du/rcar_du_kms.c:17:0:
drivers/gpu/drm/rcar-du/rcar_du_kms.c: In function 'rcar_du_modeset_init':
drivers/gpu/drm/rcar-du/rcar_du_kms.c:781:24: error: passing argument
1 of '__drmm_add_action' from incompatible pointer type
[-Werror=incompatible-pointer-types]
  ret = drmm_add_action(&rcdu->ddev, rcar_du_modeset_cleanup, NULL);
                        ^
include/drm/drm_managed.h:25:20: note: in definition of macro 'drmm_add_action'
  __drmm_add_action(dev, action, data, #action)
                    ^~~
include/drm/drm_managed.h:27:18: note: expected 'struct drm_device *'
but argument is of type 'struct drm_device **'
 int __must_check __drmm_add_action(struct drm_device *dev,
                  ^~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

Reported-by: Naresh Kamboju <naresh.kamboju at linaro.org>

Build link,
https://ci.linaro.org/job/openembedded-lkft-linux-stable-rc-5.11/DISTRO=lkft,MACHINE=ls2088ardb,label=docker-buster-lkft/8/consoleText

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