binutils: Fix building nativesdk binutils with gcc 4.9

Patches explain the issue in detail but this is exposed
with gcc 4.9 in binutils 2.23.2

(From OE-Core rev: fc5c467b680fc5aef4b0f689e6988e17a9322ae0)

(From OE-Core rev: 4dfb8847ebf8aab90ad8888933468e2899c96998)

(From OE-Core rev: af347d3298e15552d502d5b2ce497bbda9705bc7)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>