ascend inclusion
category: feature
bugzilla: NA
CVE: NA

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SDEI is a set of interfaces used for communication between the OS and ATF.
The Ascend uses the SDEI interface to implement the NMI function.
NMI depends on the soft lockup detector. The OS of the Ascend runs on EL1.
Signed-off-by: NXu Qiang <xuqiang36@huawei.com>
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>