w1: therm: constify pointers to hwmon_channel_info

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

Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Krzysztof Kozlowski <[e-mail]>

drivers/w1/slaves/w1_therm.c

···
 	.config = w1_temp_config,
 };
 
-static const struct hwmon_channel_info *w1_info[] = {
+static const struct hwmon_channel_info * const w1_info[] = {
 	&w1_temp,
 	NULL
 };