ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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Support disable oom-killer, and report oom events to bbox
vm.enable_oom_killer:
	0: disable oom killer
	1: enable oom killer (default,compatible with mainline)
	2: disable oom killer and panic on oom
Signed-off-by: NWeilong Chen <chenweilong@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>