toolchain-shar-extract.sh: provide proper path for env_setup_script
The toolchain install script suggest the user to source env_setup_script
from wrong path now. eg:
" Each time you wish to use the SDK in a new shell session, you need to
source the environment setup script e.g.
$ . /opt/poky/2.0//opt/poky/2.0/environment-setup-armv5e-poky-linux-gnueabi
"
fix it.
Signed-off-by: Maxin B. John <maxin.john@intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
