fix wrong sigaction syscall ABI on mips*, or1k, microblaze, riscv64
[musl] / src / thread / mips /
drwxr-xr-x   ..
-rw-r--r-- 147 __unmapself.s
-rw-r--r-- 595 clone.s
-rw-r--r-- 987 syscall_cp.s