kern-tools: fix patch series to git tree validation
Previous changes to the kern-tools improved functionality to ensure that
as a series is considered, it is checked against the tree to confirm that
all patches are really applied.
There was a bug in the subject based detection, such that the first matching
patch was take, and not the last. This change ensures that we start from
the end of a series, not the start.
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com> Signed-off-by: Saul Wold <sgw@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>