regulator: max8952: Make of_device_id array const

Make of_device_id array const, because all OF functions
handle it as const.

Signed-off-by: Jingoo Han <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

drivers/regulator/max8952.c

···
 };
 
 #ifdef CONFIG_OF
-static struct of_device_id max8952_dt_match[] = {
+static const struct of_device_id max8952_dt_match[] = {
 	{ .compatible = "maxim,max8952" },
 	{},
 };