[S390] cio: Set driver->owner on css, ccw and ccwgroup busses.

Set the owner field in the embedded struct device_driver to the
value provided in the {css,ccw,ccwgroup}_driver.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

drivers/s390/cio/css.h

@@ -65,6 +65,7 @@ struct pgid {
  */
 struct subchannel;
 struct css_driver {
+	struct module *owner;
 	unsigned int subchannel_type;
 	struct device_driver drv;
 	void (*irq)(struct subchannel *);