net: phy: sfp: 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 <krzysztof.kozlowski@linaro.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20230407145911.79642-8-krzysztof.kozlowski@linaro.orgSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/phy/sfp.c

@@ -1382,7 +1382,7 @@ static const struct hwmon_ops sfp_hwmon_ops = {
 	.read_string = sfp_hwmon_read_string,
 };
 
-static const struct hwmon_channel_info *sfp_hwmon_info[] = {
+static const struct hwmon_channel_info * const sfp_hwmon_info[] = {
 	HWMON_CHANNEL_INFO(chip,
 			   HWMON_C_REGISTER_TZ),
 	HWMON_CHANNEL_INFO(in,