README: add todo item for moving to module-merge-based kconfig

README.md

@@ -1,6 +1,8 @@
 Roadmap
 
 - [x] [merged upstream 2023-Jan-10](https://github.com/NixOS/nixpkgs/commit/7af47c9877dc7d16828152aed027438dc99b9421): [blobless ath9k wifi firmware](https://github.com/qca/open-ath9k-htc-firmware)
+- all platforms
+  - [ ] migrate from checking in kernel `.config` files to using `lib/module.nix` merges, like the NixOS kernel config does
 - rk3399-gru-kevin
   - [x] [done 2023-Mar-30](https://git.sr.ht/~amjoseph/ownerboot/commit/bdebb940c9c508a6d4eca4a85e70c3a400b43b89) The Chromebook Embedded Controller (EC) firmware ([`ecfw`](https://chromium.googlesource.com/chromiumos/platform/ec))
   - [x] [done 2023-Mar-30](https://git.sr.ht/~amjoseph/ownerboot/commit/1b9d35c10d5ba08291cdba4a1160dbf227d7db62) make `flashrom -p ec` work by using [the chromeos flashrom fork](https://chromium.googlesource.com/chromiumos/third_party/flashrom/)