fix warning in arch/x86/kernel/cpu/intel_cacheinfo.c

fix this warning:

  arch/x86/kernel/cpu/intel_cacheinfo.c:139: warning: ‘k8_nb_id’ defined but not used
  arch/x86/kernel/cpu/intel_cacheinfo.c:527: warning: ‘free_cache_attributes’ defined but not used
  arch/x86/kernel/cpu/intel_cacheinfo.c:538: warning: ‘detect_cache_attributes’ defined but not used

Unused variables in the !CONFIG_SYSCTL case.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/intel_cacheinfo.c

@@ -144,7 +144,7 @@ struct _cpuid4_info_regs {
 	unsigned long can_disable;
 };
 
-#ifdef CONFIG_PCI
+#if defined(CONFIG_PCI) && defined(CONFIG_SYSFS)
 static struct pci_device_id k8_nb_id[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1103) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x1203) },
@@ -484,6 +484,8 @@ unsigned int __cpuinit init_intel_cacheinfo(struct cpuinfo_x86 *c)
 	return l2;
 }
 
+#ifdef CONFIG_SYSFS
+
 /* pointer to _cpuid4_info array (for each cache leaf) */
 static DEFINE_PER_CPU(struct _cpuid4_info *, cpuid4_info);
 #define CPUID4_INFO_IDX(x, y)	(&((per_cpu(cpuid4_info, x))[y]))
@@ -597,8 +599,6 @@ static int __cpuinit detect_cache_attributes(unsigned int cpu)
 	return retval;
 }
 
-#ifdef CONFIG_SYSFS
-
 #include <linux/kobject.h>
 #include <linux/sysfs.h>