dt-bindings: leds: sgm3140: Document ocp8110 compatible

Add devicetree binding for Orient Chip OCP8110 charge pump used for
camera flash LEDs.
Signed-off-by: André Apitzsch <git@apitzsch.eu>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220505185344.10067-1-git@apitzsch.euSigned-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/leds/leds-sgm3140.yaml

@@ -18,7 +18,9 @@ description: |
 
 properties:
   compatible:
-    const: sgmicro,sgm3140
+    enum:
+      - ocs,ocp8110
+      - sgmicro,sgm3140
 
   enable-gpios:
     maxItems: 1