Chunfeng Yun d92e866f60 usb: common: add define of usb_speed_string()
There is only declaration of usb_speed_string(), but no definition,
so add it to avoid build error when call it.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2020-10-20 00:49:05 +02:00
..
2018-11-26 21:19:03 +01:00