Include by default all the files needed to perform checkpkg task.
These files are copied from meta-yocto because they refers recipes in
oe-core, the only missing file are maintainers.inc because it needs
consensus between OE-Core and Yocto project to define a common set of
maintainers.
[YOCTO #7895]
Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
