LoongArch: convert p v s cache to l1 l2 l3 format

LoongArch inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I6BWFP



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Change-Id: I0d38cd552c26b92a587465d3b5fb5e992f67ff9b
Signed-off-by: Liu Peibao <liupeibao@loongson.cn>
(cherry picked from commit eb8c6f75)