LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7AHL9

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Change-Id: I1b627be7ca7bd3690a175b3334c088e445278504
Signed-off-by: NJuxin Gao <gaojuxin@loongson.cn>
Signed-off-by: NHongchen Zhang <zhanghongchen@loongson.cn>
(cherry picked from commit f728ed91)