x86: Disable AVX-VNNI when disabling AVX2

Since AVX-VNNI requires AVX2, disable AVX-VNNI when disabling AVX2.

	* i386-gen.c (cpu_flag_init): Add CpuAVX_VNNI to
	CPU_ANY_AVX2_FLAGS.
	* i386-init.h: Regenerate.
2 files changed