cpufreq: loongson2: use cpufreq_table_validate_and_show()

Lets use cpufreq_table_validate_and_show() instead of calling
cpufreq_frequency_table_cpuinfo() and cpufreq_frequency_table_get_attr().

Cc: John Crispin <blogic@openwrt.org>
Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpufreq/loongson2_cpufreq.c

@@ -133,10 +133,7 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy)
 
 	policy->cur = loongson2_cpufreq_get(policy->cpu);
 
-	cpufreq_frequency_table_get_attr(&loongson2_clockmod_table[0],
-					 policy->cpu);
-
-	return cpufreq_frequency_table_cpuinfo(policy,
+	return cpufreq_table_validate_and_show(policy,
 					    &loongson2_clockmod_table[0]);
 }