Pulled common options that are needed for powerpc64-linux to build
out of powerpc32-linux and put them into powerpc-linux.
(From OE-Core rev: d5a42bb0382243d12388a0e0b18461c58d12c60e)
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>