[RFA/ARM 18/21] Add support for AES instructions.

[Matthew Gretton-Dann]

ARMv8 adds several AES instructions for A32 and T32.

This patch adds support for these.

gas/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* config/tc-arm.c (NEON_ENC_TAB): Add aes entry.
	(neon_type_mask): Add N_UNT.
	(neon_check_type): Don't always decay typed to untyped sizes.
	(do_crypto_2op_1): New function.
	(do_aese): Likewise.
	(do_aesd): Likewise.
	(do_aesmc.8): Likewise.
	(do_aesimc.8): Likewise.
	(insns): Add AES instructions.

gas/testsuite/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gas/arm/armv8-a+crypto.d: New testcase.
	* gas/arm/armv8-a+crypto.s: Likewise.

opcodes/ChangeLog:
2012-08-23  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* arm-dis.c (neon_opcodes): Add support for AES instructions.
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