Support Intel AVX-VNNI-INT16

Support Intel AVX-VNNI-INT16

gas/ChangeLog:

	* NEWS: Support Intel AVX-VNNI-INT16.
	* config/tc-i386.c: Add avx_vnni_int16.
	* doc/c-i386.texi: Document avx_vnni_int16.
	* testsuite/gas/i386/i386.exp: Run AVX VNNI INT16 tests.
	* testsuite/gas/i386/x86-64.exp: Ditto.
	* testsuite/gas/i386/avx-vnni-int16-intel.d: New test.
	* testsuite/gas/i386/avx-vnni-int16.d: New test.
	* testsuite/gas/i386/avx-vnni-int16.s: New test.
	* testsuite/gas/i386/x86-64-avx-vnni-int16-intel.d: New test.
	* testsuite/gas/i386/x86-64-avx-vnni-int16.d: New test.
	* testsuite/gas/i386/x86-64-avx-vnni-int16.s: New test.

opcodes/ChangeLog:

	* i386-dis.c (PREFIX_VEX_0F38D2_W_0): New.
	(PREFIX_VEX_0F38D3_W_0): Ditto.
	(VEX_W_0F38D2_P_0): Ditto.
	(VEX_W_0F38D2_P_1): Ditto.
	(VEX_W_0F38D2_P_2): Ditto.
	(VEX_W_0F38D3_P_0): Ditto.
	(VEX_W_0F38D3_P_1): Ditto.
	(VEX_W_0F38D3_P_2): Ditto.
	(prefix_table): Add PREFIX_VEX_0F38D2_W_0 and
	PREFIX_VEX_0F38D3_W_0.
	(vex_table): Add VEX_W_0F38D2 and VEX_W_0F38D3.
	(vex_w_table): Ditto.
	* i386-gen.c (isa_dependencies): Add AVX_VNNI_INT16.
	(cpu_flag): Ditto.
	* i386-init.h: Regenerated.
	* i386-mnem.h: Ditto.
	* i386-opc.h: (CpuAVX_VNNI_INT16): New.
	* i386-opc.tbl: Add Intel AVX_VNNI_INT16 instructions.
	* i386-tbl.h: Regenerated.