LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I736HO

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Integrate initrd operations to avoid reserving initrd space
multiple times during kexec/kdump.
Signed-off-by: NYouling Tang <tangyouling@loongson.cn>
Change-Id: Idb8a10c2143e7ff4682328f620de8d5b3e35b105