dt-bindings: mmc: Add support for rk3562 eMMC

The eMMC core on Rockchip's RK3562 is the same as the one already
included in RK3588. Extend the binding accordingly to allow

	compatible = "rockchip,rk3562-dwcmshc", "rockchip,rk3588-dwcmshc";

Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250227111913.2344207-3-kever.yang@rock-chips.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: keveryang

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

@@ -14,7 +14,9 @@ properties:
   compatible:
     oneOf:
       - items:
-          - const: rockchip,rk3576-dwcmshc
+          - enum:
+              - rockchip,rk3562-dwcmshc
+              - rockchip,rk3576-dwcmshc
           - const: rockchip,rk3588-dwcmshc
       - enum:
           - rockchip,rk3568-dwcmshc