x86: call identify_secondary_cpu in smp_store_cpu_info

Call it conditionally for secondary cpus. This behaviour
matches i386

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/smpboot_64.c

@@ -96,7 +96,8 @@ static void __cpuinit smp_store_cpu_info(int id)
 
 	*c = boot_cpu_data;
 	c->cpu_index = id;
-	identify_cpu(c);
+	if (id != 0)
+		identify_secondary_cpu(c);
 }
 
 static inline void wait_for_init_deassert(atomic_t *deassert)