usb: core: hcd: use map_urb_for_dma for single step set feature urb

Use map_urb_for_dma() to improve the dma map code for single step
set feature request urb in test mode.

Signed-off-by: Li Jun <jun.li@nxp.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/1620452039-11694-3-git-send-email-jun.li@nxp.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>