Make prune_suffix prune a suffix instead of replacing a substring that could
happen more than once and not only when it ends with it.
(Bitbake rev: 57e765e38c6382a9b36d5ee2a6f3fa96ac905b82)
Signed-off-by: Andre Rosa <andre.rosa@lge.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>