dt-bindings: mmc: samsung,exynos-dw-mshc: add specific compatible for exynos8890

Add samsung,exynos8890-dw-mshc-smu specific compatible to the bindings
documentation. Since Samsung, as usual, likes reusing devices from older
designs, use the samsung,exynos7-dw-mshc-smu compatible.

Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@gmail.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: ivoszbg

Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml

@@ -31,6 +31,7 @@ properties:
               - samsung,exynos5433-dw-mshc-smu
               - samsung,exynos7885-dw-mshc-smu
               - samsung,exynos850-dw-mshc-smu
+              - samsung,exynos8890-dw-mshc-smu
               - samsung,exynos8895-dw-mshc-smu
           - const: samsung,exynos7-dw-mshc-smu