[PATCH 1/2][Aarch64][binutils] Add support for ARMv8.1a Adv.SIMD instructions.

[Matthew Wahab]

ARMv8.1a adds two instructions, SQRDMLAH and SQRDMLSH, to the Aarch64 SIMD
instruction set. This patch adds support to binutils for these instructions, with
a following patch to add support in gas.

Tested aarch64-none-linux-gnu with check-gas and check-binutils.

Ok for trunk?
Matthew

include/
2015-05-20  Matthew Wahab  <matthew.wahab@arm.com>

	* opcode/aarch64.h (AARCH64_FEATURE_RDMA): New.

opcodes/
2015-05-20  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64-tbl.h (aarch64_feature_rdma): New.
	(RDMA): New.
	(aarch64_opcode_table): Add "sqrmlah" and "sqrdmlsh" instructions.
	* aarch64-asm-2.c: Regenerate.
	* aarch64-dis-2.c: Regenerate.
	* aarch64-opc-2.c: Regenerate.
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