dt-bindings: phy: ti,phy-j721e-wiz: deprecate clock MUX nodes

Mark "pll[0|1]-refclk", "refclk-dig" and "cmn-refclk1?-dig-div"
as deprecated. The clock muxes are provided by the device driver
so not required in device tree.

Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220628122255.24265-5-rogerq@kernel.org


Signed-off-by: Vinod Koul <vkoul@kernel.org>