dt-bindings: arm: amlogic: add ODROID-HC4 bindings

Add the board bindings for the ODROID-HC4 device.
Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210202021021.11068-5-christianshewitt@gmail.com

Documentation/devicetree/bindings/arm/amlogic.yaml

@@ -165,6 +165,7 @@ properties:
         items:
           - enum:
               - hardkernel,odroid-c4
+              - hardkernel,odroid-hc4
               - khadas,vim3l
               - seirobotics,sei610
           - const: amlogic,sm1