Some supplements on mips for 8ab75a56

Change-Id: Id0928e59b6a265f34a4ee986fa80e6b9dee0198c
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2946812
Auto-Submit: Liu yu <liuyu@loongson.cn>
Commit-Queue: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Reviewed-by: Zhao Jiazhong <zhaojiazhong-hf@loongson.cn>
Cr-Commit-Position: refs/heads/master@{#75003}