staging: ozwpan: Remove extra variable.

We should not use extra variable just to copy pointer value,
renaming parameter name serves pupose & removes extra variable.
Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ozwpan/ozhcd.c

@@ -720,9 +720,8 @@ struct oz_port *oz_hcd_pd_arrived(void *hpd)
  * polled. We release the reference we hold on the PD.
  * Context: softirq
  */
-void oz_hcd_pd_departed(struct oz_port *hport)
+void oz_hcd_pd_departed(struct oz_port *port)
 {
-	struct oz_port *port = hport;
 	struct oz_hcd *ozhcd;
 	void *hpd;
 	struct oz_endpoint *ep = NULL;