[PATCH 26/57][Arm][GAS] Add support for MVE instructions: vpnot and vpsel

[PATCH 26/57][Arm][GAS] Add support for MVE instructions: vpnot and vpsel

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

	* config/tc-arm.c (do_mve_vpsel): New encoding function.
	(do_mve_vpnot): Likewise.
	(insns): Add entries for MVE mnemonics.
	* testsuite/gas/arm/mve-vpnot-bad.d: New test.
	* testsuite/gas/arm/mve-vpnot-bad.l: New test.
	* testsuite/gas/arm/mve-vpnot-bad.s: New test.
	* testsuite/gas/arm/mve-vpsel-bad.d: New test.
	* testsuite/gas/arm/mve-vpsel-bad.l: New test.
	* testsuite/gas/arm/mve-vpsel-bad.s: New test.