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: 4dfb8847)

(From OE-Core rev: af347d32)

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