This script sources another script (oe-find-native-sysroot) with
arguments. It was using /bin/sh. Sourcing with arguments works only in
bash so it was failing in dash. This commit makes it dash proof.
Signed-off-by: brian avery <brian.avery@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>