cpuidle: Respect the CPU system wakeup QoS limit for cpuidle

The CPU system wakeup QoS limit must be respected for the regular cpuidle
state selection. Therefore, let's extend the common governor helper
cpuidle_governor_latency_req(), to take the constraint into account.

Reviewed-by: Dhruva Gole <[e-mail]>
Reviewed-by: Kevin Hilman (TI) <[e-mail]>
Tested-by: Kevin Hilman (TI) <[e-mail]>
Signed-off-by: Ulf Hansson <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Rafael J. Wysocki <[e-mail]>

drivers/cpuidle/governor.c

···
 	struct device *device = get_cpu_device(cpu);
 	int device_req = dev_pm_qos_raw_resume_latency(device);
 	int global_req = cpu_latency_qos_limit();
+	int global_wake_req = cpu_wakeup_latency_qos_limit();
+
+	if (global_req > global_wake_req)
+		global_req = global_wake_req;
 
 	if (device_req > global_req)
 		device_req = global_req;