media: dt-bindings: media: rockchip-vdec: Add RK3328 compatible

Document the RK3328 compatible for rockchip-vdec. The driver shares
the same base functionality as the RK3399 hardware so make sure that
the RK3399 compatible is also included in the device tree.
Signed-off-by: Christopher Obbard <chris.obbard@collabora.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Documentation/devicetree/bindings/media/rockchip,vdec.yaml

@@ -18,7 +18,9 @@ properties:
     oneOf:
       - const: rockchip,rk3399-vdec
       - items:
-          - const: rockchip,rk3228-vdec
+          - enum:
+              - rockchip,rk3228-vdec
+              - rockchip,rk3328-vdec
           - const: rockchip,rk3399-vdec
 
   reg: