Sunway inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I56OLG

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Export symbol for bind_vcpu_enabled to fix compile errors when
CONFIG_KVM=m.
Signed-off-by: NWang Yuanheng <wangyuanheng@wxiat.com>
Signed-off-by: NGu Zitao <guzitao@wxiat.com>