spl: sdp: Add a callback to clean up USB driver

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>
Signed-off-by: Peng Fan <peng.fan@nxp.com>

common/spl/spl_sdp.c

@@ -39,6 +39,7 @@ static int spl_sdp_load_image(struct spl_image_info *spl_image,
 	ret = spl_sdp_handle(controller_index, spl_image);
 	debug("SDP ended\n");
 
+	board_usb_cleanup(controller_index, USB_INIT_DEVICE);
 	return ret;
 }
 SPL_LOAD_IMAGE_METHOD("USB SDP", 0, BOOT_DEVICE_BOARD, spl_sdp_load_image);