* bfd/bin-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.

	* bfd/bin-in.h (bfd_elf32_arm_set_target_relocs): Update prototype.
	* bfd/bin-in2.h (bfd_elf32_arm_set_target_relocs): Update prototype.
	* bfd/elf32-arm.c (elf32_arm_link_hash_table): Add fix_v4bx flag.
	(bfd_elf32_arm_set_target_relocs): Add formal parameter fix_v4bx for
	passing flag value from ld. Set flag value in global hash table entry.
	(elf32_arm_final_link_relocate): Add code to implement R_ARM_V4BX
	relocation.
	* ld/emultempl/armelf.em (fix_v4bx): New variable.
	(arm_elf_create_output_section_statements): Communicate fix_v4bx flag
	value to bfd.
	(PARSE_AND_LIST_PROLOGUE): Add option token OPTION_FIX_V4BX.
	(PARSE_AND_LIST_LONGOPTS): Add option --fix-v4bx.
	(PARSE_AND_LIST_OPTIONS): Add option --fix-v4bx.
	(PARSE_AND_LIST_ARGS_CASES): Add option OPTION_FIX_V4BX.
	* ld/NEWS: Mention --fix-v4bx.
	* ld/ld.texinfo: Document --fix-v4bx.