2.5.64-bk[2-4]: CONFIG_CPU_FREQ_24_API breaks kernel/cpufreq.c compile

[Adam J. Richter]

	linux-2.5.64-bk2 added the following lines to
cpufreq_add_dev in kernel/cpufreq.c:

#ifdef CONFIG_CPU_FREQ_24_API
        cpu_min_freq[cpu] = cpufreq_driver->policy[cpu].cpuinfo.min_freq;
        cpu_max_freq[cpu] = cpufreq_driver->policy[cpu].cpuinfo.max_freq;
        cpu_cur_freq[cpu] = cpufreq_driver->cpu_cur_freq[cpu];
#endif

	However, cpu_{min,max,cur}_freq are static variables in
drivers/cpufreq/userspace.c.  Making the variables global is not a
sufficient fix, because drivers/cpufreq/userspace.c can be built as
separate module.  So, I guess the variables should be moved to
kernel/cpufreq.c or the code that I quoted above should somehow be
moved.

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