arm64/ascend: Notifier will return a freed val to indecate print logs

ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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When there's not enough memory, a log of oom messages will be dump.
This patch is to reduce messages by using an indecate val passed to
the notifier.

Signed-off-by: Weilong Chen <chenweilong@huawei.com>
Reviewed-by: Ding Tianhong <dingtianhong@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>