dt-bindings: usb: ti,j721e-usb: fix compatible list

Compatible can be A or B+A, not A or B or A+B. B got added afterwards,
we want B+A not A+B. A=ti,j721e-usb and B=ti,am64-usb.

Reviewed-by: Rob Herring <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Signed-off-by: Théo Lebrun <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

Documentation/devicetree/bindings/usb/ti,j721e-usb.yaml

···
   compatible:
     oneOf:
       - const: ti,j721e-usb
-      - const: ti,am64-usb
       - items:
-          - const: ti,j721e-usb
           - const: ti,am64-usb
+          - const: ti,j721e-usb
 
   reg:
     maxItems: 1