[PATCH 50/57][Arm][OBJDUMP] Add support for MVE shift instructions

[PATCH 50/57][Arm][OBJDUMP] Add support for MVE shift instructions

opcodes/ChangeLog:
2019-05-16  Andre Vieira  <andre.simoesdiasvieira@arm.com>
	    Michael Collison <michael.collison@arm.com>

	* arm-dis.c (enum mve_instructions): Add new instructions.
	(enum mve_undefined): Add new reasons.
	(is_mve_encoding_conflict): Handle new instructions.
	(is_mve_undefined): Likewise.
	(is_mve_unpredictable): Likewise.
	(print_mve_undefined): Likewise.
	(print_mve_size): Likewise.
	(print_mve_shift_n): Likewise.
	(print_insn_mve): Likewise.