dt-bindings: mmc: rockchip: add rockchip,rk3128-dw-mshc

Add rockchip,rk3128-dw-mshc compatible string.
Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/f2cb42c8-3664-a2d5-074d-5c9a10c693e8@gmail.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml

@@ -32,6 +32,7 @@ properties:
               - rockchip,px30-dw-mshc
               - rockchip,rk1808-dw-mshc
               - rockchip,rk3036-dw-mshc
+              - rockchip,rk3128-dw-mshc
               - rockchip,rk3228-dw-mshc
               - rockchip,rk3308-dw-mshc
               - rockchip,rk3328-dw-mshc