power: supply: hwmon: constify pointers to hwmon_channel_info

Statically allocated array of pointed to hwmon_channel_info can be made
const for safety.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Sebastian Reichel <[e-mail]>

drivers/power/supply/power_supply_hwmon.c

···
 	.read_string	= power_supply_hwmon_read_string,
 };
 
-static const struct hwmon_channel_info *power_supply_hwmon_info[] = {
+static const struct hwmon_channel_info * const power_supply_hwmon_info[] = {
 	HWMON_CHANNEL_INFO(temp,
 			   HWMON_T_LABEL     |
 			   HWMON_T_INPUT     |