dt-bindings: phy: rename phy-rockchip-inno-usb2.yaml

Rename phy-rockchip-inno-usb2.yaml to a more common format of
rockchip,inno-usb2phy.yaml

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/99794484-d67e-ee1f-4e76-200de20a879c@gmail.com


Signed-off-by: Heiko Stuebner <heiko@sntech.de>