Added a DEFAULTTUNE setting and included arch-powerpc.inc. This way we
pick up the changes to TUNE_PKGARCH and things should be kept more in
sync going forward.
(From OE-Core rev: 2c9bd779b008be266072f3c6d79430f63ec02241)
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>