This is a follow up patch for pr83488 to fix an error in setting

This is a follow up patch for pr83488 to fix an error in setting
OPTION_MASK_ISA_AVX512VNNI_SET and OPTION_MASK_ISA_AVX512F_SET bits.
There were both set in ix86_isa_flags2 while being defined in
different ISA sets. Additionally move OPTION_MASK_ISA_AVX512VNNI_SET
to ix86_isa_flags as it can be used with OPTION_MASK_ISA_AVX512VL_SET.

gcc/
	* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512VNNI_SET):
	Or in OPTION_MASK_ISA_AVX512F_SET.
	(OPTION_MASK_ISA_AVX512F_UNSET): Or in
	OPTION_MASK_ISA_AVX512VNNI_UNSET.
	(ix86_handle_option): Adjust for
	OPTION_MASK_ISA_AVX512VNNI_*SET being in ix86_isa_flags.
	* config/i386/i386-builtin.def: Move VNNI builtins from ARGS2
	section to ARGS.
	* config/i386/i386-c.c: Check for OPTION_MASK_ISA_AVX512VNNI in
	isa_flag instead of isa_flag2.
	* config/i386/i386.c (ix86_target_string): Move -mavx512vnni from
	isa_opts2 to isa_opts.
	* config/i386/i386.opt (mavx512vnni): Move from ix86_isa_flags2
	to ix86_isa_flags.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@255974 138bc75d-0d04-0410-961f-82ee72b054a4