* elf-bfd.h (_bfd_elf_define_linkage_sym): Declare.

	* elf-bfd.h (_bfd_elf_define_linkage_sym): Declare.
	* elflink.c (_bfd_elf_define_linkage_sym): New function, extracted
	from..
	(_bfd_elf_create_got_section): ..here.
	(_bfd_elf_link_create_dynamic_sections): Call it for _DYNAMIC.
	(_bfd_elf_create_dynamic_sections): ..and _PROCEDURE_LINKAGE_TABLE_.
	* elf-m10300.c (_bfd_mn10300_elf_create_got_section): Use
	_bfd_elf_define_linkage_sym.
	* elf32-frv.c (_frv_create_got_section): Likewise.
	* elf64-alpha.c (elf64_alpha_create_dynamic_sections): Likewise.