dt-bindings: gpio: Add compatible string for Unisoc UMS512

UMS512 use the same GPIO and EIC controller with SC9860.
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Documentation/devicetree/bindings/gpio/sprd,gpio-eic.yaml

@@ -42,12 +42,33 @@ description: |
 
 properties:
   compatible:
-    enum:
+    oneOf:
+      - enum:
           - sprd,sc9860-eic-debounce
           - sprd,sc9860-eic-latch
           - sprd,sc9860-eic-async
           - sprd,sc9860-eic-sync
           - sprd,sc2731-eic
+      - items:
+          - enum:
+              - sprd,ums512-eic-debounce
+          - const: sprd,sc9860-eic-debounce
+      - items:
+          - enum:
+              - sprd,ums512-eic-latch
+          - const: sprd,sc9860-eic-latch
+      - items:
+          - enum:
+              - sprd,ums512-eic-async
+          - const: sprd,sc9860-eic-async
+      - items:
+          - enum:
+              - sprd,ums512-eic-sync
+          - const: sprd,sc9860-eic-sync
+      - items:
+          - enum:
+              - sprd,sc2730-eic
+          - const: sprd,sc2731-eic
 
   reg:
     minItems: 1

Documentation/devicetree/bindings/gpio/sprd,gpio.yaml

@@ -19,7 +19,12 @@ description: |
 
 properties:
   compatible:
-    const: sprd,sc9860-gpio
+    oneOf:
+      - const: sprd,sc9860-gpio
+      - items:
+          - enum:
+              - sprd,ums512-gpio
+          - const: sprd,sc9860-gpio
 
   reg:
     maxItems: 1