It's not appropriate to require xxx.bb in xxx-native.bb, causing that
xxx-native depends on target recipe.
Use BBCLASSEXTEND to solve this issue.
(From OE-Core rev: aa8f6b64055c6576bcdb63d3bbf9ab47b87c0d59)
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>