dt-bindings: net: Convert socfpga-dwmac bindings to yaml

dt-bindings: net: Convert socfpga-dwmac bindings to yaml

Convert the bindings for socfpga-dwmac to yaml. Since the original
text contained descriptions for two separate nodes, two separate
yaml files were created.

Signed-off-by: Mun Yew Tham <mun.yew.tham@altera.com>
Signed-off-by: Matthew Gerlach <matthew.gerlach@altera.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20250630213748.71919-1-matthew.gerlach@altera.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>