To handle class requests received on ep0, the driver needs to access the
length and direction of the request after the setup stage. It currently
stores them in a v4l2 event during the setup stage, and then copies them
from the event structure to the driver internal state structure when the
event is dequeued.

This two-steps approach isn't necessary. Simplify the driver by storing
the needed information in the driver internal state structure directly
during the setup stage.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>