Obviously the mode where both host and gadget mode are available
also needs to depend on the Barebox gadget support.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

The DWC3 driver uses some functions which are only available when
Barebox is built with OFDEVICE support. Since there is no platform
without DT support suing DWC3 we can reasonably depend on this
config option.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Expand the DWC3 usb core with gadget support.
Patches imported and adopted from Linux v5.2.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Import DWC3 USB controller driver from Linux. This is a bare minimum
port of the code needed to support USB host functionality on
i.MX8MQ. No other use-case is explicitly supported.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>