cpufreq: kirkwood: use cpufreq_generic_init()

Use generic cpufreq_generic_init() routine instead of replicating the same code
here.
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/kirkwood-cpufreq.c

@@ -120,10 +120,7 @@ static int kirkwood_cpufreq_target(struct cpufreq_policy *policy,
 /* Module init and exit code */
 static int kirkwood_cpufreq_cpu_init(struct cpufreq_policy *policy)
 {
-	/* cpuinfo and default policy values */
-	policy->cpuinfo.transition_latency = 5000; /* 5uS */
-
-	return cpufreq_table_validate_and_show(policy, kirkwood_freq_table);
+	return cpufreq_generic_init(policy, kirkwood_freq_table, 5000);
 }
 
 static struct cpufreq_driver kirkwood_cpufreq_driver = {