arm64: dts: rockchip: Move mipi_out node on rk3399 haikou demo dtso

arm64: dts: rockchip: Move mipi_out node on rk3399 haikou demo dtso

According to the DTS coding style [1] referenced nodes should be sorted
alpha-numerically so move mipi_out to be after mipi_in_panel.

[1] https://www.kernel.org/doc/html/latest/devicetree/bindings/dts-coding-style.html#order-of-nodes

Signed-off-by: Diederik de Haas <didi.debian@cknow.org>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20250709132323.128757-8-didi.debian@cknow.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>