[CPUFREQ] Extra __init section function for longrun driver.

From Luiz Fernando Capitulino

arch/i386/kernel/cpu/cpufreq/longrun.c

@@ -33,7 +33,7 @@ static unsigned int longrun_low_freq, longrun_high_freq;
  * Reads the current LongRun policy by access to MSR_TMTA_LONGRUN_FLAGS
  * and MSR_TMTA_LONGRUN_CTRL
  */
-static void longrun_get_policy(struct cpufreq_policy *policy)
+static void __init longrun_get_policy(struct cpufreq_policy *policy)
 {
 	u32 msr_lo, msr_hi;