Add git hooks to automatically update patches in patchwork

[pevik]

as we don't want to do it manually. https://patchwork.readthedocs.io/en/latest/deployment/installation/#optional-configure-your-vcs-to-automatically-update-patches

[pevik]

NOTE: if we migrate to https://patchwork.kernel.org/ and have git mirror on https://git.kernel.org/, we would have this setup for free, see: https://korg.docs.kernel.org/patchwork/index.html#adding-patchwork-bot-integration (+ other setup).