cpufreq: s3cx4xx: 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: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --cc drivers/cpufreq/s3c2416-cpufreq.c
Simple merge

diff --cc drivers/cpufreq/s3c24xx-cpufreq.c
Simple merge

diff --cc drivers/cpufreq/s3c64xx-cpufreq.c
Simple merge