AVX10.2 ymm rounding: Support vcvtps2{,u}{dq,qq} intrins

gcc/ChangeLog:

	* config/i386/avx10_2roundingintrin.h: New intrins.
	* config/i386/i386-builtin-types.def: Add new DEF_FUNCTION_TYPE.
	* config/i386/i386-builtin.def (BDESC): Add new builtins.
	* config/i386/i386-expand.cc (ix86_expand_round_builtin): Handle
	V8SI_FTYPE_V8SF_V8SI_UQI_INT, V4DI_FTYPE_V4SF_V4DI_UQI_INT.
	* config/i386/sse.md
	(<sse2_avx_avx512f>_fix_notrunc<sf2simodelower><mode><mask_name>):
	Extend to round.
	(<mask_codefor><avx512>_fixuns_notrunc<sf2simodelower><mode><mask_name><round_name>):
	Add round condition check.
	* config/i386/subst.md (round_constraint4): New.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/avx-1.c: Add new builtin test.
	* gcc.target/i386/sse-13.c: Ditto.
	* gcc.target/i386/sse-14.c: Ditto.
	* gcc.target/i386/sse-22.c: Add new macro test.
	* gcc.target/i386/sse-23.c: Ditto.
	* gcc.target/i386/avx10_2-rounding-1.c: Add test.