Fixes#58283
When running in a docker container you can have fewer cores assigned
to you than get_nrpoc would suggest.
Since the test just wants to know that interception worked, allow
any result > 0 and <= the global core count.
Reviewed By: MaskRay, vitalybuka
Differential Revision: https://reviews.llvm.org/D135677
pthread_getaffinity_np (Linux `kernel/sched/core.c:sched_getaffinity`) fails
with EINVAL if 8*cpusetsize (constant in glibc: 1024) is smaller than
`nr_cpu_ids` (CONFIG_NR_CPUS, which is 2048 for several arch/powerpc/configs
configurations).
The build bot clang-ppc64le-linux-lnt seems to have a larger `nr_cpu_ids`.
Differential Revision: https://reviews.llvm.org/D127368
