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Revert D154931 on loong64

Chen Li requested to merge leechee/llvm-toolchain:17 into 17

D154931[1] needs to be reverted on LLVM17. As Loongson SIMD Extension (LSX) and Loongson Advanced SIMD Extension(LASX) are not fully supported on LLVM17, InlineAsm for LSX and LASX should not be supported as well. Otherwise it leads to the following issue[2]: ''' LLVM ERROR: Cannot select: 0x7ffea41a3650: ch = store<(store (s128) into %ir.mask store52)> 0x7ffea41a35e0, 0x7ffea4196a30, FrameIndex:i64<6>, undef:i64 '''

LSX and LASX are fully supported on LLVM18 and are not supported on LLVM16, thus only LLVM17 has the problem.

[1] https://reviews.llvm.org/D154931 [2] https://buildd.debian.org/status/fetch.php?pkg=qtdeclarative-opensource-src&arch=loong64&ver=5.15.10%2Bdfsg-2%2Bb1&stamp=1710571569&raw=0

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