usb: dwc2: Set actual frame number for completed ISOC transfer for none DDMA

On ISOC OUT transfer completion, in none DDMA mode, set actual frame
number returning to function driver in usb_request.

Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>