ipq806x: support independent core clocks with kernel 4.9+

Add back support for the independent_clocks definition that has been
removed between kernel 4.4 and 4.9 by upstream commits
eb96924acddc709db58221c210ca05cd9effb1df and
e86eee6bc2aaa6b3637f6497b26beee09a91bde9

* extend the new cpufreq_dt_platform_data definition in cpufreq-dt.h
* use new cpufreq-dt.h in qcom-cpufreq.c

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

--- a/drivers/cpufreq/cpufreq-dt.h
+++ b/drivers/cpufreq/cpufreq-dt.h
@@ -14,6 +14,7 @@
 
 struct cpufreq_dt_platform_data {
 	bool have_governor_per_policy;
+	bool independent_clocks;
 };
 
 #endif /* __CPUFREQ_DT_H__ */
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -221,7 +221,10 @@ static int cpufreq_init(struct cpufreq_p
 	}
 
 	if (fallback) {
-		cpumask_setall(policy->cpus);
+		struct cpufreq_dt_platform_data *pd = cpufreq_get_driver_data();
+
+		if (!pd || !pd->independent_clocks)
+			cpumask_setall(policy->cpus);
 
 		/*
 		 * OPP tables are initialized only for policy->cpu, do it for
@@ -376,6 +379,8 @@ static int dt_cpufreq_probe(struct platf
 	if (data && data->have_governor_per_policy)
 		dt_cpufreq_driver.flags |= CPUFREQ_HAVE_GOVERNOR_PER_POLICY;
 
+	dt_cpufreq_driver.driver_data = dev_get_platdata(&pdev->dev);
+
 	ret = cpufreq_register_driver(&dt_cpufreq_driver);
 	if (ret)
 		dev_err(&pdev->dev, "failed register driver: %d\n", ret);
--- a/drivers/cpufreq/qcom-cpufreq.c
+++ b/drivers/cpufreq/qcom-cpufreq.c
@@ -20,7 +20,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
 #include <linux/slab.h>
-#include <linux/cpufreq-dt.h>
+#include "cpufreq-dt.h"
 
 static void __init get_krait_bin_format_a(int *speed, int *pvs, int *pvs_ver)
 {