native.bbclass: populate native recipe with it's files

native.bbclass: populate native recipe with it's files

This allows a native package's recipe-sysroot-native to be populated with
that packages native image files.  This in turns allows it to be used by
scripts or other tools without creating un-necessary DEPENDS.

An example of this is systemtap-native and the crosstap script.

Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>