Kconfig symbol S3C24XX_PLL depends on ARM_S3C24XX.  But that symbol
doesn't exist.  Commit 
f023f8dd59bf ("cpufreq: s3c24xx: move cpufreq
driver to drivers/cpufreq"), which added this issue, makes it clear
that ARM_S3C24XX_CPUFREQ was intended here.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
 
 
 config S3C24XX_PLL
        bool "Support CPUfreq changing of PLL frequency (EXPERIMENTAL)"
-       depends on ARM_S3C24XX
+       depends on ARM_S3C24XX_CPUFREQ
        help
          Compile in support for changing the PLL frequency from the
          S3C24XX series CPUfreq driver. The PLL takes time to settle