SPDX:real-time license scanning and SPDX output.

SPDX:real-time license scanning and SPDX output.

SPDX integrates real-time license scanning, generates
SPDX standard output and license verification
information during the OE-Core build process. The
existing module includes scanning patched packages
and creating package and file level SPDX documents.

(From OE-Core rev: 7a37cc81fb95d56b5ac5e5ca22a1900e45717911)

Signed-off-by: liangcao <liangcao@unomaha.edu>
Signed-off-by: Elizabeth Flanagan <elizabeth.flanagan@intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>