dt-bindings: media: rockchip,rk3568-mipi-csi2: add rk3576 support

Add rockchip,rk3576-mipi-csi2 as a compatible that falls back to
rockchip,rk3568-mipi-csi2, following the same pattern as the existing
rk3588-mipi-csi2 entry.

Signed-off-by: Jason Devers <dev.json2@gmail.com>

Author: hz2

Documentation/devicetree/bindings/media/rockchip,rk3568-mipi-csi2.yaml

@@ -20,6 +20,7 @@ properties:
       - const: fsl,imx93-mipi-csi2
       - items:
           - enum:
+              - rockchip,rk3576-mipi-csi2
               - rockchip,rk3588-mipi-csi2
           - const: rockchip,rk3568-mipi-csi2
       - const: rockchip,rk3568-mipi-csi2