Bug#1042980: gnome-shell: FTBFS on mips64el, mipsel: perf-* tests fail

[YunQiang Su]

Ohh, Mozjs102 is using WASM now, which generates some MIPS SIMD instructions.
Interestingly, Let's try to rebuild mozjs102 with llvm-15, and then
maybe llvm-16.
I may need to help fix llvm-toolchain-16/snapshot first.


-- 
YunQiang Su