usb: gadget: add isoch_delay member

Whenever a USB host issues a Set Isoch Delay request, we should cache
the result so relevant gadget drivers can make use of the value for
calculating how many uFrames ahead a transfer should be queued.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2017-11-14 12:27:24 +02:00
commit c7000aa030