[binutils][aarch64] Introduce SVE_IMM_ROT3 operand.

[binutils][aarch64] Introduce SVE_IMM_ROT3 operand.

New operand AARCH64_OPND_SVE_IMM_ROT3 handles a single bit rotate
operand encoded at bit position 10.

gas/ChangeLog:

2019-05-09  Matthew Malcomson  <matthew.malcomson@arm.com>

	* config/tc-aarch64.c (parse_operands): Handle new SVE_IMM_ROT3 operand.

include/ChangeLog:

2019-05-09  Matthew Malcomson  <matthew.malcomson@arm.com>

	* opcode/aarch64.h (enum aarch64_opnd): New SVE_IMM_ROT3 operand.

opcodes/ChangeLog:

2019-05-09  Matthew Malcomson  <matthew.malcomson@arm.com>

	* aarch64-asm-2.c: Regenerated.
	* aarch64-dis-2.c: Regenerated.
	* aarch64-opc-2.c: Regenerated.
	* aarch64-opc.c (operand_general_constraint_met_p): Constraint checking
	for SVE_IMM_ROT3.
	(aarch64_print_operand): Add printing for SVE_IMM_ROT3.
	(fields): Handle SVE_rot3 field.
	* aarch64-opc.h (enum aarch64_field_kind): New SVE_rot3 field.
	* aarch64-tbl.h (AARCH64_OPERANDS): Use new SVE_IMM_ROT3 operand.