uio: constify of_device_id array

of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/uio/uio_pdrv_genirq.c

@@ -252,7 +252,7 @@ static const struct dev_pm_ops uio_pdrv_genirq_dev_pm_ops = {
 };
 
 #ifdef CONFIG_OF
-static struct of_device_id uio_of_genirq_match[] = {
+static const struct of_device_id uio_of_genirq_match[] = {
 	{ /* This is filled with module_parm */ },
 	{ /* Sentinel */ },
 };