[Bug target/92389] Compiling with -march=icelake-client does not enable __AVX512VPOPCNTDQ__

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92389

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Thank you Tom for the bug report (and the suggested fix). It's obviously
correct.
One can verify the feature availability here:
https://en.wikipedia.org/wiki/AVX-512#CPUs_with_AVX-512