Rebase on FSF binutils v2.28.
    - Retire: binutils-2.23.52.0.1-addr2line-dynsymtab.patch
    - Retire: binutils-2.27-local-dynsym-count.patch
    - Retire: binutils-2.27-monotonic-section-offsets.patch
    - Retire: binutils-2.27-arm-aarch64-default-relro.patch
    - Retire: binutils-2.28-gold.patch
    - Retire: binutils-2.27-objdump-improvements.patch
    - Retire: binutils-2.27-dwarf-parse-speedup.patch
    - Retire: binutils-2.27-objdump-improvements.2.patch
    - Retire: binutils-2.27-arm-binary-objects.patch
    - Retire: binutils-2.27-ppc-fp-attributes.patch
    - Add patch to sync libiberty with FSF GCC mainline.
    Relates: #1428310