From Franz Sirl <Franz.Sirl-kernel@lauterbach.com>:

	From Franz Sirl <Franz.Sirl-kernel@lauterbach.com>:
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Set unused dynindx
	field to 0, not -1.
	(ppc_elf_finish_dynamic_sections): Check for positive section
	dynindx field, rather than comparing against -1.
	(ppc_elf_relocate_section): Only return false if undefined_symbol
	or reloc_overflow fail, not always upon encountering an error.