loongarch target -> mips:

[HougeLangley]

For better performance and using LSX/LASX to build ncnn.

make -mlsx -mlasx -jX

[tencent-adm]

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[codecov-commenter]

Codecov Report

Merging #4044 (754a08d) into master (b0c40fa) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4044   +/-   ##
=======================================
  Coverage   94.41%   94.41%           
=======================================
  Files         745      745           
  Lines      178450   178450           
=======================================
  Hits       168488   168488           
  Misses       9962     9962           

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[nihui]

Thanks for your contribution !

[HougeLangley]

You are welcome, my friend