hwmon: Make regmap configs const

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/tmp103.c b/drivers/hwmon/tmp103.c
index c9f99e0..c74d2da 100644
--- a/drivers/hwmon/tmp103.c
+++ b/drivers/hwmon/tmp103.c
@@ -116,7 +116,7 @@
 	return reg == TMP103_TEMP_REG;
 }
 
-static struct regmap_config tmp103_regmap_config = {
+static const struct regmap_config tmp103_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 	.max_register = TMP103_THIGH_REG,