pinctrl: dove: Constify struct regmap_config and of_device_id

The regmap_config struct may be const because it is not modified by the
driver and regmap_init() accepts pointer to const. Make also
of_device_id array const.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/mvebu/pinctrl-dove.c

@@ -751,12 +751,12 @@ static struct mvebu_pinctrl_soc_info dove_pinctrl_info = {
 
 static struct clk *clk;
 
-static struct of_device_id dove_pinctrl_of_match[] = {
+static const struct of_device_id dove_pinctrl_of_match[] = {
 	{ .compatible = "marvell,dove-pinctrl", .data = &dove_pinctrl_info },
 	{ }
 };
 
-static struct regmap_config gc_regmap_config = {
+static const struct regmap_config gc_regmap_config = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = 4,