[PATCH v2 2/3] dt-bindings: drm/bridge: ps8640: Add aux-bus child

[Stephen Boyd]

Quoting Philip Chen (2021-09-29 17:34:57)
> dp-aux-bus.yaml says we can list an eDP panel as a child of
> an eDP controller node to represent the fact that the panel
> is connected to the controller's DP AUX bus.
>
> Let's add it to the ps8640 bindings.
>
> Signed-off-by: Philip Chen <philipchen at chromium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>