[PATCH 1/2][ARM][binutils] Add support for ARMv8.1 PAN extension

[Matthew Wahab]

The ARMv8.1 architecture introduces the Aarch32 Privileged Access Never
extension. This adds a new instruction SETPAN, with ARM and Thumb encodings to
write to a new CPSR.PAN bit.

This patch adds support to binutils for the PAN extension and the SETPAN
instructions. A following patch adds support to gas.

Tested for arm-none-linux-gnueabihf with check-binutils and check-gas.

Ok for trunk?
Matthew

include/opcode/
2015-05-21  Matthew Wahab  <matthew.wahab@arm.com>

	* arm.h (ARM_EXT2_PAN): New.
	(ARM_FEATURE_CORE_HIGH): New.

opcodes/
2015-05-21  Matthew Wahab <matthew.wahab@arm.com>

	* arm-dis.c (arm_opcodes): Add "setpan".
	(thumb_opcodes): Add "setpan".
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