[Morello] Add BICFLGS

[Morello] Add BICFLGS

gas/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* config/tc-aarch64.c (parse_operands): Add A64C_IMM8.
	* testsuite/gas/aarch64/morello_insn.d: Add tests.
	* testsuite/gas/aarch64/morello_insn-c64.d: Likewise.
	* testsuite/gas/aarch64/morello_insn.s: Likewise.

include/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* opcode/aarch64.h (aarch64_opnd): Add A64C_IMM8.

opcodes/ChangeLog:

2020-10-20  Siddhesh Poyarekar  <siddesh.poyarekar@arm.com>

	* aarch64-opc.c (fields): Add a64c_imm8.
	(aarch64_print_operand): Add A64C_IMM8.
	* aarch64-opc.h (aarch64_field_kind): Add a64c_imm8.
	* aarch64-tbl.h (QL3_A64C_CA_CA_X): New macro.
	(aarch64_opcode_table): New instructions.
	(AARCH64_OPERANDS): Add A64C_IMM8.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis-2.c: Regenerate.
	* aarch64-opc-2.c: Regenerate.