AVX10.2 ymm rounding: Support vcvttps2{,u}{dq,qq} and vcvtu{dq,qq}2p{s,d,h} intrins

gcc/ChangeLog:

	* config/i386/avx10_2roundingintrin.h: New intrins.
	* config/i386/i386-builtin.def (BDESC): Add new builtins.
	* config/i386/sse.md
	(unspec_fix_truncv8sfv8si2<mask_name>): Extend rounding control.
	(<mask_codefor>fixuns_trunc<mode><sseintvecmodelower>2<mask_name>):
	Ditto.
	(<mask_codefor>floatuns<sseintvecmodelower><mode>2<mask_name><round_name>):
	Add condition check.
	(fix<fixunssuffix>_trunc<mode><sselongvecmodelower>2<mask_name><round_saeonly_name>):
	Remove round_saeonly_name.

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-2.c: Add test.