Add cpuInfo support for Loongarch systems

[33749110]

In addition to the three submissions, the latest version of Googlebenchmark has added support for loongarch.

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[33749110]

@malfet Can you approve?

[33749110]

1.Sorry, this is a small mistake of mine, we currently have no plans to release on IOS. It's been removed.

2.Related links to the Loongarch Isa are as follows: loongarch isa：https://www.loongson.cn/loongArch 3a-5000：https://www.loongson.cn/productShow/32

[33749110]

Conflicts caused by Cmakefile version issues have been resolved.

[33749110]

Do you have any other questions？

[cheungxi]

ping

[33749110]

ping

What does ping mean? May I ask if there are any problems I need to modify in this submission? If not, can I pass it? Thank you very much.