Convert the CPSW Port's Interface Mode Selection PHY bindings documentation
to json-schema.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20200721225247.31034-1-grygorii.strashko@ti.comSigned-off-by: Rob Herring <robh@kernel.org>