dt-bindings: net: dsa: microchip,ksz: Drop undocumented "id"

"id" is not a documented property, so drop it.

Signed-off-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20241113225642.1783485-2-robh@kernel.org


Signed-off-by: Jakub Kicinski <kuba@kernel.org>