This time the version of the patch that works.
* bfd/elf32-arm.h (struct elf32_elf_section_map): New.
(struct _arm_elf_section_data): New.
(elf32_arm_section_data): Define.
(struct elf32_arm_link_hash_table): Add byteswap_code.
(elf32_arm_link_hash_table_create): Initialize byteswap_code.
(bfd_elf32_arm_process_before_allocation): Add byteswap_code.
(elf32_arm_post_process_headers): Set EF_ARM_BE8.
(elf32_arm_output_symbol_hook, elf32_arm_new_section_hook,
elf32_arm_compare_mapping, elf32_arm_write_section): New functions.
(bfd_elf32_new_section_hook, elf_backend_write_section,
elf_backend_link_output_symbol_hook): Define.