ELF: Consolidate maybe_set_textrel

ELF: Consolidate maybe_set_textrel

All maybe_set_textrel implementations are the same.  Consolidate them
to a single _bfd_elf_maybe_set_textrel.

	* elf-bfd.h (_bfd_elf_maybe_set_textrel): New
	* elf32-arm.c (maybe_set_textrel): Removed.
	(elf32_arm_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-csky.c (maybe_set_textrel): Removed.
	(csky_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-hppa.c (maybe_set_textrel): Removed.
	(elf32_hppa_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-lm32.c (maybe_set_textrel): Removed.
	(lm32_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-m32r.c (maybe_set_textrel): Removed.
	(m32r_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-metag.c (maybe_set_textrel): Removed.
	(elf_metag_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-nds32.c (maybe_set_textrel): Removed.
	(nds32_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-or1k.c (maybe_set_textrel): Removed.
	(or1k_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-ppc.c (maybe_set_textrel): Removed.
	(ppc_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-s390.c (maybe_set_textrel): Removed.
	(elf_s390_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-sh.c (maybe_set_textrel): Removed.
	(sh_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-tic6x.c (maybe_set_textrel): Removed.
	(elf32_tic6x_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf32-tilepro.c (maybe_set_textrel): Removed.
	(tilepro_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf64-ppc.c (maybe_set_textrel): Removed.
	(ppc64_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elf64-s390.c (maybe_set_textrel): Removed.
	(elf_s390_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elfnn-aarch64.c (maybe_set_textrel): Removed.
	(elfNN_aarch64_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elfnn-riscv.c (maybe_set_textrel): Removed.
	(riscv_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elfxx-sparc.c (maybe_set_textrel): Removed.
	(_bfd_sparc_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elfxx-tilegx.c (maybe_set_textrel): Removed.
	(tilegx_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elfxx-x86.c (maybe_set_textrel): Removed.
	(_bfd_x86_elf_size_dynamic_sections): Replace maybe_set_textrel
	with _bfd_elf_maybe_set_textrel.
	* elflink.c (_bfd_elf_maybe_set_textrel): New.