Darwin target will not be detected correctly
if qemu is cross-compiled under a Linux host.
(From OE-Core rev: 47d1fc9f5c38f3d092937c47bd4c2f45adaa7fe6)
Signed-off-by: Cristian Iorga <cristian.iorga@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>