arm64: dts: rockchip: add overlay test for WolfVision PF5

arm64: dts: rockchip: add overlay test for WolfVision PF5

The WolfVision PF5 can have a PF5 Visualizer display and PF5 IO Expander
board connected to it. Therefore, let's generate an overlay test so the
application of the two overlays are validated against the base DTB.

Suggested-by: Michael Riesch <michael.riesch@wolfvision.net>
Reviewed-by: Michael Riesch <michael.riesch@wolfvision.net>
Reviewed-by: Dragan Simic <dsimic@manjaro.org>
Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Link: https://lore.kernel.org/r/20250211-pre-ict-jaguar-v6-1-4484b0f88cfc@cherry.de
Signed-off-by: Heiko Stuebner <heiko@sntech.de>