[PATCH v5 06/13] powerpc: Adapt elf64_apply_relocate_add for kexec_file_load.

Extend elf64_apply_relocate_add to support relative symbols. This is necessary because there is a difference between how the module loading mechanism and the kexec purgatory loading code use Elf64_Sym.st_value at relocation time: the former changes st_value to point to the absolute memory address

[PATCH v5 06/13] powerpc: Adapt elf64_apply_relocate_add for kexec_file_load.

Extend elf64_apply_relocate_add to support relative symbols. This is necessary because there is a difference between how the module loading mechanism and the kexec purgatory loading code use Elf64_Sym.st_value at relocation time: the former changes st_value to point to the absolute memory address