reloc is against read-only section.
(elf_s390_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(elf_s390_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elf32-s390.c (elf_s390_check_relocs): Set DF_TEXTREL if the
reloc is against read-only section.
(elf_s390_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(elf_s390_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
* elf32-ppc.c (ppc_elf_check_relocs): Set DF_TEXTREL if the reloc
is against read-only section.
(ppc_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of
looking up section names for DT_TEXTREL.
(ppc_elf_reloc_type_class): New.
(elf_backend_reloc_type_class): Define.
