x86: use CONFIG_X86_SMP instead of CONFIG_SMP

Impact: fix x86/Voyager boot

CONFIG_SMP is used for features which work on *all* x86 boxes.
CONFIG_X86_SMP is used for standard PC like x86 boxes (for things like
multi core and apics)
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/cpu/addon_cpuid_features.c

@@ -69,7 +69,7 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c)
  */
 void __cpuinit detect_extended_topology(struct cpuinfo_x86 *c)
 {
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_SMP
 	unsigned int eax, ebx, ecx, edx, sub_index;
 	unsigned int ht_mask_width, core_plus_mask_width;
 	unsigned int core_select_mask, core_level_siblings;

arch/x86/kernel/tsc.c

@@ -759,7 +759,7 @@ __cpuinit int unsynchronized_tsc(void)
 	if (!cpu_has_tsc || tsc_unstable)
 		return 1;
 
-#ifdef CONFIG_SMP
+#ifdef CONFIG_X86_SMP
 	if (apic_is_clustered_box())
 		return 1;
 #endif