hwmon: Make regmap configs const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/ltc2945.c

@@ -469,7 +469,7 @@ static struct attribute *ltc2945_attrs[] = {
 };
 ATTRIBUTE_GROUPS(ltc2945);
 
-static struct regmap_config ltc2945_regmap_config = {
+static const struct regmap_config ltc2945_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = LTC2945_MIN_ADIN_THRES_L,