[PATCH 23/57][Arm][GAS] Add support for MVE instructions: vmla, vmul, vqadd and vqsub

[PATCH 23/57][Arm][GAS] Add support for MVE instructions: vmla, vmul, vqadd and vqsub

gas/ChangeLog:
2019-05-16  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/tc-arm.c (enum operand_parse_code): New operand.
	(parse_operands): Handle new operand.
	(mve_encode_qqr): Handle new instructions.
	(do_neon_dyadic_i64_su): Accept MVE variants.
	(neon_dyadic_misc): Likewise.
	(do_neon_mac_maybe_scalar): Likewise.
	(do_neon_mul): Likewise.
	(insns): Change to accept MVE variants.
	* testsuite/gas/arm/mve-vmla-bad.d: New test.
	* testsuite/gas/arm/mve-vmla-bad.l: New test.
	* testsuite/gas/arm/mve-vmla-bad.s: New test.
	* testsuite/gas/arm/mve-vmul-bad-1.d: New test.
	* testsuite/gas/arm/mve-vmul-bad-1.l: New test.
	* testsuite/gas/arm/mve-vmul-bad-1.s: New test.
	* testsuite/gas/arm/mve-vmul-bad-2.d: New test.
	* testsuite/gas/arm/mve-vmul-bad-2.l: New test.
	* testsuite/gas/arm/mve-vmul-bad-2.s: New test.
	* testsuite/gas/arm/mve-vqaddsub-bad.d: New test.
	* testsuite/gas/arm/mve-vqaddsub-bad.l: New test.
	* testsuite/gas/arm/mve-vqaddsub-bad.s: New test.