cpuidle: Call cpu_latency_qos_limit() instead of pm_qos_request()

Call cpu_latency_qos_limit() instead of pm_qos_request(), because the
latter is going to be dropped.

No intentional functional impact.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>

drivers/cpuidle/governor.c

@@ -109,9 +109,9 @@ int cpuidle_register_governor(struct cpuidle_governor *gov)
  */
 s64 cpuidle_governor_latency_req(unsigned int cpu)
 {
-	int global_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY);
 	struct device *device = get_cpu_device(cpu);
 	int device_req = dev_pm_qos_raw_resume_latency(device);
+	int global_req = cpu_latency_qos_limit();
 
 	if (device_req > global_req)
 		device_req = global_req;