[Patch] x86: export cpu_llc_id for edac drivers

[Amerigo Wang <amwang@redhat.com>]

When I compiled today's Linus tree, I got a link error from
drivers/edac/edac_mce_amd.c:408, it complained about not finding
symbol 'per_cpu__cpu_llc_id'. This is due to we don't export
'cpu_llc_id'.

This patch fixes it.

Signed-off-by: WANG Cong <amwang@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Tejun Heo <tj@kernel.org>
Cc: Mike Travis <travis@sgi.com>

---
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index c36cc14..3241773 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -99,6 +99,7 @@ EXPORT_SYMBOL(smp_num_siblings);
 
 /* Last level cache ID of each logical CPU */
 DEFINE_PER_CPU(u16, cpu_llc_id) = BAD_APICID;
+EXPORT_PER_CPU_SYMBOL(cpu_llc_id);
 
 /* representing HT siblings of each logical CPU */
 DEFINE_PER_CPU(cpumask_var_t, cpu_sibling_map);