Some .deb files contain uncompressed data tarballs which do not have an
additional file extension after `.tar`. Add support for such cases while
preserving the existing behaviour.
(Bitbake rev: e3834deb427ceb1d1ae9a96c1e0dec990d7f3805)
Signed-off-by: Isaac True <isaac.true@emlix.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>