cpufreq: Fix sparse warnings by updating cputime64_t to u64

There were few sparse warnings due to mismatch of type on function arguments.
Two types were used u64 and cputime64_t. Both are actually u64, so use u64 only.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 5ea2c82..be9d255 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -50,7 +50,7 @@
 	return jiffies_to_usecs(idle_time);
 }
 
-cputime64_t get_cpu_idle_time(unsigned int cpu, cputime64_t *wall)
+u64 get_cpu_idle_time(unsigned int cpu, u64 *wall)
 {
 	u64 idle_time = get_cpu_idle_time_us(cpu, NULL);
 
@@ -83,7 +83,7 @@
 	/* Get Absolute Load (in terms of freq for ondemand gov) */
 	for_each_cpu(j, policy->cpus) {
 		struct cpu_dbs_common_info *j_cdbs;
-		cputime64_t cur_wall_time, cur_idle_time, cur_iowait_time;
+		u64 cur_wall_time, cur_idle_time, cur_iowait_time;
 		unsigned int idle_time, wall_time, iowait_time;
 		unsigned int load;