[ARC] Enable .cfi_* pseudo-ops.

[ARC] Enable .cfi_* pseudo-ops.

gas/
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/tc-arc.c (tc_arc_frame_initial_instructions): New
	function.
	(tc_arc_regname_to_dw2regnum): Likewise.
	* config/tc-arc.h (TARGET_USE_CFIPOP): Define
	(tc_cfi_frame_initial_instructions): Likewise.
	(tc_regname_to_dw2regnum): Likewise.

gas/testsuite
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

	* gas/cfi/cfi-arc-1.d: New file.
	* gas/cfi/cfi-arc-1.s: Likewise.
	* gas/cfi/cfi.exp: Allow running tests for arc.

binutils/
2016-02-16  Claudiu Zissulescu  <claziss@synopsys.com>

	* readelf.c (is_32bit_pcrel_reloc): Add R_ARC_32_PCREL.