docs: list net macb silent TX stall fixes in kernel/build/patches/README.md

Cross-reference the three macb patches added in this PR from the
kernel-patches README so the patches table stays in sync with the
files dropped under kernel/build/patches/.

Signed-off-by: Lukasz Raczylo <lukasz@raczylo.com>
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>

Author: lukaszraczylo

kernel/build/patches/README.md

@@ -1,2 +1,5 @@
 | Patch file                                                                 | Description                                | Upstream status | Link                                                                                                                                                                                                         |
 |----------------------------------------------------------------------------|--------------------------------------------|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `0001-net-macb-flush-PCIe-posted-write-after-TSTART-doorbe.patch`           | macb: flush PCIe posted write after TSTART doorbell (silent TX stall on BCM2712/RP1)                            | RFC submitted to netdev | [lore thread](https://lore.kernel.org/netdev/cover.1777064117.git.lukasz@raczylo.com/T/)                                                                                                              |
+| `0002-net-macb-re-check-ISR-after-IER-re-enable-in-macb_tx.patch`           | macb: re-check ISR after IER re-enable in `macb_tx_poll()` to catch TCOMP raised inside the IDR/IER mask window | RFC submitted to netdev | [lore thread](https://lore.kernel.org/netdev/cover.1777064117.git.lukasz@raczylo.com/T/)                                                                                                              |
+| `0003-net-macb-add-TX-stall-watchdog-as-defence-in-depth-s.patch`           | macb: per-queue `delayed_work` watchdog that calls `macb_tx_restart()` if `tx_tail` hasn't advanced for ≥ 1 s   | RFC submitted to netdev | [lore thread](https://lore.kernel.org/netdev/cover.1777064117.git.lukasz@raczylo.com/T/)                                                                                                              |