dt-bindings: clock: loongson2: Add Loongson-2K0500 compatible

Add the devicetree compatible for Loongson-2K0500 clocks.
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/c4784102d2bb8bf6982799babe39d5827235461d.1712731524.git.zhoubinbin@loongson.cnAcked-by: Huacai Chen <chenhuacai@loongson.cn>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Documentation/devicetree/bindings/clock/loongson,ls2k-clk.yaml

@@ -16,7 +16,8 @@ description: |
 properties:
   compatible:
     enum:
-      - loongson,ls2k-clk
+      - loongson,ls2k0500-clk
+      - loongson,ls2k-clk  # This is for Loongson-2K1000
 
   reg:
     maxItems: 1