hwmon: Make regmap configs const

Signed-off-by: Axel Lin <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c
index a37b220..1ea7ca5 100644
--- a/drivers/hwmon/emc1403.c
+++ b/drivers/hwmon/emc1403.c
@@ -416,7 +416,7 @@
 	}
 }
 
-static struct regmap_config emc1403_regmap_config = {
+static const struct regmap_config emc1403_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.cache_type = REGCACHE_RBTREE,