dt-bindings: usb: Add support for Terminus FE1.1s USB2.0 Hub controller

dt-bindings: usb: Add support for Terminus FE1.1s USB2.0 Hub controller

Terminus FE1.1s is USB2.0 protocol compliant 4-port USB HUB, It support
MTT (Multiple Transaction Translator) mode, the upstream port supports
high-speed 480MHz and full-speed 12MHz modes, also has integrated 5V to
3.3V, 1.8V regulator and Power-On-Reset circuit.

Introduce the DT binding for it.

Link: https://terminus-usa.com/wp-content/uploads/2024/06/FE1.1s-Product-Brief-Rev.-2.0-2023.pdf
Signed-off-by: Yixun Lan <dlan@kernel.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260319-03-usb-hub-fe1-v2-1-e4e26809dd7d@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>