drm/msm/dpu: move disable_danger out of plane subdir

The disable_danger debugfs file is not related to a single plane.
Instead it is used by all registered planes. Move it from plane subtree
to the global subtree next to danger_status and safe_status files,
so that the new file supplements them.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Link: https://lore.kernel.org/r/20211201222633.2476780-2-dmitry.baryshkov@linaro.org


Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>