int i2o_device_claim_release (struct i2o_device * dev);
Drop a claim by an OSM on a given I2O device.
AC - some devices seem to want to refuse an unclaim until they have finished internal processing. It makes sense since you don't want a new device to go reconfiguring the entire system until you are done. Thus we are prepared to wait briefly.
Returns 0 on success or negative error code on failure.