dt-bindings: PCI: ti,j721e-pci-host: Simplify 'device-id' schema

'device-id' is just a scalar value, so just 'enum' is sufficient.

Link: https://lore.kernel.org/r/20230125221432.3058405-1-robh@kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/pci/ti,j721e-pci-host.yaml

@@ -66,15 +66,11 @@ properties:
     const: 0x104c
 
   device-id:
-    oneOf:
-      - items:
-          - const: 0xb00d
-      - items:
-          - const: 0xb00f
-      - items:
-          - const: 0xb010
-      - items:
-          - const: 0xb013
+    enum:
+      - 0xb00d
+      - 0xb00f
+      - 0xb010
+      - 0xb013
 
   msi-map: true