dt-bindings: mmc: sdhci-of-dwcmhsc: Add compatible string for RK3528

The SDHCI controller in Rockchip RK3528 is similar to the one included
in RK3588.

Add compatible string for the SDHCI controller in RK3528.

Signed-off-by: Jonas Karlman <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>

Author: Kwiboo

Documentation/devicetree/bindings/mmc/snps,dwcmshc-sdhci.yaml

@@ -15,6 +15,7 @@ properties:
     oneOf:
       - items:
           - enum:
+              - rockchip,rk3528-dwcmshc
               - rockchip,rk3562-dwcmshc
               - rockchip,rk3576-dwcmshc
           - const: rockchip,rk3588-dwcmshc