x86: Handle -mavx512vpopcntdq for -march=native

Add -mavx512vpopcntdq for -march=native if AVX512VPOPCNTDQ is available.

	PR target/95258
	* config/i386/driver-i386.c (host_detect_local_cpu): Detect
	AVX512VPOPCNTDQ.

(cherry picked from commit 808b611bfb4b05703ea174e50874c711dca44c98)
2 files changed