If python2 and python3 are both available, scripts that are subject to
this substitution can possibly run with the wrong python version.
python3-config is one such script.
(From OE-Core rev: 23849347d0fe60a01578efdd6c6e23ebb444dcd6)
Signed-off-by: Tyler Hall <tylerwhall@gmail.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>