[GAS][AARCH64]Add BFD_RELOC_AARCH64_MOVW_GOTOFF_G1 Support.

[GAS][AARCH64]Add BFD_RELOC_AARCH64_MOVW_GOTOFF_G1 Support.

bfd/

2015-10-02  Renlin Li  <renlin.li@arm.com>

	* reloc.c (BFD_RELOC_AARCH64_MOVW_GOTOFF_G1): New.
	* elfnn-aarch64.c (elfNN_aarch64_howto_table): New entry for
	MOVW_GOTOFF_G1.
	* libbfd.h: Regenerate.
	* bfd-in2.h: Regenerate.

gas/

2015-10-02  Renlin Li  <renlin.li@arm.com>

	* config/tc-aarch64.c (reloc_table): New relocation modifier
	gotoff_g1.
	(process_movw_reloc_info): Support newly added modifier.
	(md_apply_fix): Likewise.

gas/testsuite/

2015-10-02  Renlin Li  <renlin.li@arm.com>

	* gas/aarch64/reloc-gotoff_g1.s: New.
	* gas/aarch64/reloc-gotoff_g1.d: New.