arm: socfpga: Add USB and UDC support for Cyclone V DK
Add support for USB host mode and USB device mode for the Cyclone V development kit and enable support for UMS (to export SD card as USB mass storage). The UMS is activated via 'ums 0 mmc 0' command, the system must be connected to a host PC via HPS USB port and SD card must be installed for this to work. Signed-off-by: NMarek Vasut <marex@denx.de> Cc: Chin Liang See <clsee@opensource.altera.com> Acked-by: NDinh Nguyen <dinguyen@opensource.altera.com> Acked-by: NPavel Machek <pavel@denx.de> Reviewed-by: NStefan Roese <sr@denx.de> Cc: Vince Bridgers <vbridger@opensource.altera.com>
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