Revert "sound: line6: move to use usb_control_msg_send() and usb_control_msg_recv()"

This reverts commit f7ef7614.
The API has to be changed.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20200923134348.23862-5-oneukum@suse.com


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