[CPUFREQ] add missing __percpu markup in pcc-cpufreq.c

pcc_cpu_info is a percpu pointer but was missing __percpu markup.
Add it.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Dave Jones <davej@redhat.com>

arch/x86/kernel/cpu/cpufreq/pcc-cpufreq.c

@@ -110,7 +110,7 @@ struct pcc_cpu {
 	u32 output_offset;
 };
 
-static struct pcc_cpu *pcc_cpu_info;
+static struct pcc_cpu __percpu *pcc_cpu_info;
 
 static int pcc_cpufreq_verify(struct cpufreq_policy *policy)
 {