Support Intel AMX-TF32

In this patch, we will support AMX-TF32. It is a simple ISA
comparing to the previous ones, so there is no special handling.

gas/ChangeLog:

	* config/tc-i386.c: Add amx_tf32.
	* doc/c-i386.texi: Document .amx_tf32.
	* testsuite/gas/i386/x86-64.exp: Run AMX-TF32 tests.
	* testsuite/gas/i386/x86-64-amx-tf32-bad.d: New test.
	* testsuite/gas/i386/x86-64-amx-tf32-bad.s: Ditto.
	* testsuite/gas/i386/x86-64-amx-tf32-intel.d: Ditto.
	* testsuite/gas/i386/x86-64-amx-tf32-inval.l: Ditto.
	* testsuite/gas/i386/x86-64-amx-tf32-inval.s: Ditto.
	* testsuite/gas/i386/x86-64-amx-tf32.d: Ditto.
	* testsuite/gas/i386/x86-64-amx-tf32.s: Ditto.

opcodes/ChangeLog:

	* i386-dis.c (PREFIX_VEX_0F3848_X86_64_W_0_L_0): New.
	(X86_64_VEX_0F3848): Ditto.
	(VEX_LEN_0F3848_X86_64_W_0): Ditto.
	(VEX_W_0F3848_X86_64): Ditto.
	(prefix_table): Add PREFIX_VEX_0F3848_X86_64_W_0_L_0.
	(x86_64_table): Add X86_64_VEX_0F3848.
	(vex_len_table): Add VEX_LEN_0F3848_X86_64_W_0.
	(vex_w_table): Add VEX_W_0F3848_X86_64.
	* i386-gen.c (isa_dependencies): Add AMX_TF32.
	(cpu_flags): Ditto.
	* i386-init.h: Regenerated.
	* i386-mnem.h: Ditto.
	* i386-opc.h (CpuAMX_TF32): New.
	(i386_cpu_flags): Add cpuamx_tf32.
	* i386-opc.tbl: Add AMX-TF32 instructions.
	* i386-tbl.h: Regenerated.
17 files changed