dt-bindings: net: altr,tse: Fix error in "compatible" conditional schema

The conditional if/then schema has an error as the "enum" values have
"const" in them. Drop the "const".

Signed-off-by: Rob Herring <[e-mail]>
Reviewed-by: Conor Dooley <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Paolo Abeni <[e-mail]>

Documentation/devicetree/bindings/net/altr,tse.yaml

···
         compatible:
           contains:
             enum:
-              - const: altr,tse-1.0
-              - const: ALTR,tse-1.0
+              - altr,tse-1.0
+              - ALTR,tse-1.0
     then:
       properties:
         reg: