toolchain-scripts.bbclass: Use PYTHONPATH instead of PYTHONHOME
In the extensible sdk it was originally intended that the native sstate
would always be setscened as part of the sdk installation. However, the
soon to come "minimal" sdk won't do that.
A side effect of that is that pointing PYTHONHOME at the native sysroot
within the "bitbake workspace" won't work. For now only set PYTHONPATH
instead and continue using the python that comes from buildtools.
Signed-off-by: Randy Witt <randy.e.witt@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
