ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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Now spa overview in /proc/sharepool/spa_stat supports two new data.
Spa dvpp size:    physical memory usage in DVPP region.
Spa dvpp va size: virtual memory usage in DVPP region.
Signed-off-by: NTang Yizhou <tangyizhou@huawei.com>
Reviewed-by: NDing Tianhong <dingtianhong@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>