python3: several fixes for cross compiling
* Add a patch to use CROSSPYTHONPATH as PYTHONPATH for
PYTHON_FOR_BUILD, otherwise CROSSPYTHONPATH is never used,
and it use the path in target builds to find libraries.
* Add a patch to avoid finding host headers and libs
* Fix a typo: s/python-native3/python3-native/
(From OE-Core rev:
d3d00163671bda5395c9046c1109f711772e4ed9)
Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
