Adds the new Fields and Operand types for the new instructions in Armv8.4-a.

Adds the new Fields and Operand types for the new instructions in Armv8.4-a.

gas/
	* config/tc-aarch64.c (process_omitted_operand):
	Add AARCH64_OPND_Va, AARCH64_OPND_SM3_IMM2
	and AARCH64_OPND_IMM_2.
	(parse_operands): Add AARCH64_OPND_Va, AARCH64_OPND_SM3_IMM2,
	AARCH64_OPND_IMM_2, AARCH64_OPND_MASK
	and AARCH64_OPND_ADDR_OFFSET.

include/
	* opcode/aarch64.h:
	(aarch64_opnd): Add AARCH64_OPND_Va, AARCH64_OPND_MASK,
	AARCH64_OPND_IMM_2, AARCH64_OPND_ADDR_OFFSET
	and AARCH64_OPND_SM3_IMM2.
	(aarch64_insn_class): Add cryptosm3 and cryptosm4.
	(arch64_feature_set): Make uint64_t.

opcodes/
	* aarch64-asm.h (ins_addr_offset): New.
	* aarch64-asm.c (aarch64_ins_reglane): Add cryptosm3.
	(aarch64_ins_addr_offset): New.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis.h (ext_addr_offset): New.
	* aarch64-dis.c (aarch64_ext_reglane): Add cryptosm3.
	(aarch64_ext_addr_offset): New.
	* aarch64-dis-2.c: Regenerate.
	* aarch64-opc.h (aarch64_field_kind): Add FLD_imm6_2,
	FLD_imm4_2 and FLD_SM3_imm2.
	* aarch64-opc.c (fields): Add FLD_imm6_2,
	FLD_imm4_2 and FLD_SM3_imm2.
	(operand_general_constraint_met_p): Add AARCH64_OPND_ADDR_OFFSET.
	(aarch64_print_operand): Add AARCH64_OPND_Va, AARCH64_OPND_SM3_IMM2,
	AARCH64_OPND_MASK, AARCH64_OPND_IMM_2 and AARCH64_OPND_ADDR_OFFSET.
	* aarch64-opc-2.c (Va, MASK, IMM_2, ADDR_OFFSET, SM3_IMM2): New.
	* aarch64-tbl.h
	(aarch64_opcode_table): Add Va, MASK, IMM_2, ADDR_OFFSET, SM3_IMM2.