nds32, sh, kvx: DT_JMPREL/DT_PLTRELSZ

As commit fa4f2d46f9 did for x86, there a few other targets that
wrongly use the output section rather than the dynamic section for
DT_JMPREL and others.

	* elfnn-kvx.c (elfNN_kvx_finish_dynamic_sections): Use input
	section for DT_JMPREL.
	* elf32-sh.c (sh_elf_finish_dynamic_sections): Use input
	section for DT_JMPREL and DT_PLTRELSZ.
	* elf32-nds32.c (nds32_elf_finish_dynamic_sections): Likewise,
	and for DT_PLTGOT and when adjusting DT_RELA.