For readers landing on the public repo, document:
* what the three patches do and what bug they target
* link to the upstream netdev submission (lore archive)
* link to the Cilium / Ubuntu launchpad issue trackers
* how the rpi-fork-targeted version here differs from the
mainline-targeted version on netdev (5-line macb.h hunk variation
for the vendor fork's extra bool tx_pending field)
* license: GPL-2.0-only (kernel-derived) overriding the harness's MIT
* how to add additional patches (drop a *.patch file; sorted apply
order)
No code changes.
