hwmon: (g762) 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 <jg1.han@samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/g762.c b/drivers/hwmon/g762.c
index b4b8b5b..98a8618 100644
--- a/drivers/hwmon/g762.c
+++ b/drivers/hwmon/g762.c
@@ -586,7 +586,7 @@
  */
 
 #ifdef CONFIG_OF
-static struct of_device_id g762_dt_match[] = {
+static const struct of_device_id g762_dt_match[] = {
 	{ .compatible = "gmt,g762" },
 	{ .compatible = "gmt,g763" },
 	{ },