lib/group_cpus: Export group_cpus_evenly()

Export group_cpus_evenly() so that some modules
can make use of it to group CPUs evenly according
to NUMA and CPU locality.
Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230323053043.35-2-xieyongji@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

lib/group_cpus.c

@@ -426,3 +426,4 @@ struct cpumask *group_cpus_evenly(unsigned int numgrps)
 	return masks;
 }
 #endif /* CONFIG_SMP */
+EXPORT_SYMBOL_GPL(group_cpus_evenly);