dt-bindings: mips: loongson: Add Loongson-1 based boards

Add two Loongson-1 based boards: LSGZ 1B and Smartloong 1C.
Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>

Documentation/devicetree/bindings/mips/loongson/devices.yaml

@@ -37,6 +37,18 @@ properties:
         items:
           - const: loongson,loongson64v-4core-virtio
 
+      - description: LS1B based boards
+        items:
+          - enum:
+              - loongson,lsgz-1b-dev
+          - const: loongson,ls1b
+
+      - description: LS1C based boards
+        items:
+          - enum:
+              - loongmasses,smartloong-1c
+          - const: loongson,ls1c
+
 additionalProperties: true
 
 ...

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -769,6 +769,8 @@ patternProperties:
     description: Lontium Semiconductor Corporation
   "^loongson,.*":
     description: Loongson Technology Corporation Limited
+  "^loongmasses,.*":
+    description: Nanjing Loongmasses Ltd.
   "^lsi,.*":
     description: LSI Corp. (LSI Logic)
   "^lwn,.*":