isp116x-hcd: constify hc_driver structures

The hc_driver structure is only passed as the first argument to
usb_create_hcd, which is declared as const.  Thus the hc_driver structure
itself can be const.

Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/host/isp116x-hcd.c

@@ -1511,7 +1511,7 @@ static int isp116x_bus_resume(struct usb_hcd *hcd)
 
 #endif
 
-static struct hc_driver isp116x_hc_driver = {
+static const struct hc_driver isp116x_hc_driver = {
 	.description = hcd_name,
 	.product_desc = "ISP116x Host Controller",
 	.hcd_priv_size = sizeof(struct isp116x),