test: Add `mips64(el)-linux-(none,musl,gnuabi64)` targets.
These take 3-4 minutes to run on my machine, i.e. they're not affected by the
LLVM compilation speed bug that affects mips32.
3e8ac8e23fAlex Rønne Petersen committed on 8/18/2024, 5:27:23 AMparentecbc701