usb: misc: usbtest: improve the description for error message

Now the function of complicated_callback is not only used for iso
transfer, improve the error message to reflect it.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Peter Chen 2015-11-18 17:40:23 +08:00 • committed by Felipe Balbi
commit 4cee4fa5de