Add support for building with x32 toolchain.
(From OE-Core rev: 971c2042351c039b1d51f67e8e78749d0374d729)
Signed-off-by: Nitin A Kamble <nitin.a.kamble@intel.com>
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>