dt-bindings: arm: rockchip: Add GameForce Chi

The GameForce Chi is a handheld gaming device from GameForce powered
by the Rockchip RK3326 SoC.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240325134959.11807-5-macroalpha82@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

Documentation/devicetree/bindings/arm/rockchip.yaml

@@ -243,6 +243,11 @@ properties:
           - const: friendlyarm,nanopc-t6
           - const: rockchip,rk3588
 
+      - description: GameForce Chi
+        items:
+          - const: gameforce,chi
+          - const: rockchip,rk3326
+
       - description: GeekBuying GeekBox
         items:
           - const: geekbuying,geekbox