dt-bindings: arm: sunxi: Add Sipeed Longan Module 3H and Longan Pi 3H

Add name & compatible for the Sipeed Longan Module 3H and Longan PI 3H
board.
Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240211081739.395-2-jszhang@kernel.orgSigned-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

Documentation/devicetree/bindings/arm/sunxi.yaml

@@ -841,6 +841,12 @@ properties:
           - const: sinlinx,sina33
           - const: allwinner,sun8i-a33
 
+      - description: Sipeed Longan Pi 3H board for the Sipeed Longan Module 3H
+        items:
+          - const: sipeed,longan-pi-3h
+          - const: sipeed,longan-module-3h
+          - const: allwinner,sun50i-h618
+
       - description: SourceParts PopStick v1.1
         items:
           - const: sourceparts,popstick-v1.1