cpuidle: psci: Extend information in log about OSI/PC mode

It's useful to understand whether we are using OS-initiated (OSI) mode or
Platform Coordinated (PC) mode, when initializing the CPU PM domains.
Therefore, let's extend the print in the log after a successful probe with
this information.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Sudeep Holla <sudeep.holla@arm.com
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpuidle/cpuidle-psci-domain.c

@@ -181,7 +181,8 @@ static int psci_cpuidle_domain_probe(struct platform_device *pdev)
 	if (ret)
 		goto remove_pd;
 
-	pr_info("Initialized CPU PM domain topology\n");
+	pr_info("Initialized CPU PM domain topology using %s mode\n",
+		use_osi ? "OSI" : "PC");
 	return 0;
 
 put_node: