[PATCH v2 17/19] drm/sun4i: backend: Make zpos configurable

[Chen-Yu Tsai]

On Mon, Jan 22, 2018 at 6:35 PM, Maxime Ripard
<maxime.ripard at free-electrons.com> wrote:
> Now that we have everything in place, we can make zpos configurable now.
> Change the zpos property from an immutable one to a regular.
>
> Signed-off-by: Maxime Ripard <maxime.ripard at free-electrons.com>

Reviewed-by: Chen-Yu Tsai <wens at csie.org>