Device tree best practice is to disable any external interface in the
dtsi and just enable them if needed in the device tree. Thus, disable
the ethernet switch and its ports by default and just enable the ones
used by the EVMs in their device trees.

There is no functional change.
Signed-off-by: Michael Walle <mwalle@kernel.org>
Acked-by: Andrew Davis <afd@ti.com>
Link: https://lore.kernel.org/r/20240403101545.3932437-1-mwalle@kernel.orgSigned-off-by: Nishanth Menon <nm@ti.com>