[AArch64][Patch 2/5] Add Statistical Profiling Extension system registers.

[AArch64][Patch 2/5] Add Statistical Profiling Extension system registers.

The Statistical Profile extension included in the ARMv8.2 architecture
adds a number of system registers. This patch adds the registers to
binutils, making them available when the architecture extension
"+profile" is enabled.

opcodes/
2015-12-11  Matthew Wahab  <matthew.wahab@arm.com>

	* aarch64-opc.c (aarch64_sys_reg): Add pbmlimitr_el1, pmbptr_el1,
	pmbsr_el1, pmbidr_el1, pmscr_el1, pmsicr_el1, pmsirr_el1,
	pmsfcr_el1, pmsevfr_el1, pmslatfr_el1, pmsidr_el1, pmscr_el2 and
	pmscr_el2.
	(aarch64_sys_reg_supported_p): Add architecture feature tests for
	the new registers.

gas/testsuite/
2015-12-11  Matthew Wahab  <matthew.wahab@arm.com>

	* gas/aarch64/sysreg-2.s: Add tests for the statistical profiling
	system registers.
	* gas/aarch64/sysreg-2.d: Enable the statistical profiling
	extension and update the expected output.

Change-Id: Ibf23ad34db7c33f0fcd30010b796748b38be6efb