cpufreq: stats: Fix string format specifier mismatch

Fix following warning:

drivers/cpufreq/cpufreq_stats.c:63:10: warning: %d in format string (no.
1) requires 'int' but the argument type is 'unsigned int'

Fixes: 40c3bd4c ("cpufreq: stats: Defer stats update to cpufreq_stats_record_transition()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/cpufreq_stats.c

@@ -62,7 +62,7 @@ static ssize_t show_total_trans(struct cpufreq_policy *policy, char *buf)
 	if (READ_ONCE(stats->reset_pending))
 		return sprintf(buf, "%d\n", 0);
 	else
-		return sprintf(buf, "%d\n", stats->total_trans);
+		return sprintf(buf, "%u\n", stats->total_trans);
 }
 cpufreq_freq_attr_ro(total_trans);