reset: sti: 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>
Acked-by: Maxime Coquelin <maxime.coquelin@st.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

drivers/reset/sti/reset-stih407.c

@@ -126,7 +126,7 @@ static const struct syscfg_reset_controller_data stih407_picophyreset_controller
 	.channels = stih407_picophyresets,
 };
 
-static struct of_device_id stih407_reset_match[] = {
+static const struct of_device_id stih407_reset_match[] = {
 	{
 		.compatible = "st,stih407-powerdown",
 		.data = &stih407_powerdown_controller,

drivers/reset/sti/reset-stih415.c

@@ -89,7 +89,7 @@ static struct syscfg_reset_controller_data stih415_softreset_controller = {
 	.channels = stih415_softresets,
 };
 
-static struct of_device_id stih415_reset_match[] = {
+static const struct of_device_id stih415_reset_match[] = {
 	{ .compatible = "st,stih415-powerdown",
 	  .data = &stih415_powerdown_controller, },
 	{ .compatible = "st,stih415-softreset",

drivers/reset/sti/reset-stih416.c

@@ -120,7 +120,7 @@ static struct syscfg_reset_controller_data stih416_softreset_controller = {
 	.channels = stih416_softresets,
 };
 
-static struct of_device_id stih416_reset_match[] = {
+static const struct of_device_id stih416_reset_match[] = {
 	{ .compatible = "st,stih416-powerdown",
 	  .data = &stih416_powerdown_controller, },
 	{ .compatible = "st,stih416-softreset",