x86: export smp_ops to allow modular build of KVM

KVM uses smp_call_function_mask and therefor need smp_ops to be exported.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/kernel/smp_32.c

@@ -708,3 +708,4 @@ struct smp_ops smp_ops = {
 	.smp_send_reschedule = native_smp_send_reschedule,
 	.smp_call_function_mask = native_smp_call_function_mask,
 };
+EXPORT_SYMBOL_GPL(smp_ops);