d09031f528
USB support This revision adds USB (EHCI/OHCI/OTG, depending on SoC type) support for various Ralink/Mediatek SoCs. Currently USB is not supported on MT7621, this will be a future addition. A USB PHY driver is also included, so that we can properly initialize the USB PHY (e.g., clocks, resets, registers where needed), before attempting to initialize EHCI/OHCI/OTG functionality. Approved by: adrian (mentor) Sponsored by: Smartcom - Bulgaria AD Differential Revision: https://reviews.freebsd.org/D5841