kern-tools: fix multi patch application without headers

kern-tools: fix multi patch application without headers

Updating the kern-tools SRCREV to import the following change:

    kgit-s2q: always update ORIG_HEAD after applying changes

    In situations where git am fails to apply patches, and git apply is used,
    we must update ORIG_HEAD as well as HEAD. This is required, since if the
    next patch in the queue also fails git am application, it will reset to
    ORIG_HEAD before using git apply. If we haven't updated ORIG_HEAD, we'll
    end up warping back to the top of the branch each time.

This problem can only be seen in very specific situations, in particular if
a generated BSP branches from qemuppc, and has a series of non git "am able"
patches. We fail, since all of the qemuppc patches are not applied due to
the branch head constantly being reset.

(From OE-Core rev: 5126ac0aeb3154d31769dc20a46b6b1a6b2e3d9b)

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>