devtool: commit for extra tasks that modify source when extracting
When extracting source for a recipe, if there are additional custom
tasks run that make changes to the source, create a commit in the
generated git branch so they are contained. This is particularly
useful for tasks that come before do_patch since otherwise the changes
might get incorporated in the first applied patch, but otherwise it
helps avoid the tree being dirty at any point.
Fixes [YOCTO #7626].
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>