dt-bindings: leds: sc2731: Add compatible for SC2730

The LED controller found in the SC2730 PMIC is compatible with the one
found in the SC2731 PMIC.

Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260222-sc27xx-mfd-cells-v1-2-69526fe74c77@abscue.de
Signed-off-by: Lee Jones <lee@kernel.org>

Author: affenull2345

Documentation/devicetree/bindings/leds/sprd,sc2731-bltc.yaml

@@ -18,7 +18,12 @@ description: |
 
 properties:
   compatible:
-    const: sprd,sc2731-bltc
+    oneOf:
+      - items:
+          - enum:
+              - sprd,sc2730-bltc
+          - const: sprd,sc2731-bltc
+      - const: sprd,sc2731-bltc
 
   reg:
     maxItems: 1