Cross Reference: /external/u-boot/doc/device-tree-bindings/usb

`Name`	`Date`	`Size`
Up to higher level directory
`dwc3-st.txt`	22-Oct-2020	`1.9K`
`ehci-msm.txt`	22-Oct-2020	`261`
`marvell.xhci-usb.txt`	22-Oct-2020	`972`
`tegra-usb.txt`	22-Oct-2020	`1.1K`