AVX10.2: Support vector copy instructions

gcc/ChangeLog:

	* config.gcc: Add avx10_2copyintrin.h.
	* config/i386/i386.md (avx10_2): New isa attribute.
	* config/i386/immintrin.h: Include avx10_2copyintrin.h.
	* config/i386/sse.md
	(sse_movss_<mode>): Add new constraints to handle AVX10.2.
	(vec_set<mode>_0): Ditto.
	(@vec_set<mode>_0): Ditto.
	(vec_set<mode>_0): Ditto.
	(avx512fp16_mov<mode>): Ditto.
	(*vec_set<mode>_0_1): New split.
	* config/i386/avx10_2copyintrin.h: New file.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/avx10_2-vmovd-1.c: New test.
	* gcc.target/i386/avx10_2-vmovd-2.c: Ditto.
	* gcc.target/i386/avx10_2-vmovw-1.c: Ditto.
	* gcc.target/i386/avx10_2-vmovw-2.c: Ditto.