[PATCH 4/5] spl: sdp: Add a callback to clean up USB driver

sbabic at denx.de
2020-05-04T07:35:11Z

> From: Ye Li <ye.li@nxp.com>
> Because SDP directly jumps to next level boot image, we'd better
> clean up the USB driver before it. Implement a weak callback function,
> that spl sdp can use it to clean up USB driver.
> Signed-off-by: Ye Li <ye.li@nxp.com>