Unified initramfs fallout megathread

If you've been pointed here, you may have run into a problem related to the recent unified initramfs changes.

Please copy/paste the below template and fill it out in a comment reply to this issue.

If you see someone else reporting the same issue (E.g. matching errors in logs, same/similar device), leave a reply to their comment instead with any additional information.

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**Device: <!-- in vendor-model codename format -->**

## Description of issue

* [ ] `apk upgrade` failed
* [ ] device no longer boots

<!-- Please provide any additional context here -->

## Logs

<details>
<summary>Output from failed apk upgrade</summary>
```
<!-- PASTE HERE -->
```
</details>

<!-- If your device no longer boots, it likely drops to the initramfs "debug shell".
If you plug it into your PC it should show up as a removable storage device named "PMOS_LOGS".
Please drag and drop the .tar.gz file here to upload it. -->

Workarounds

• If the error message indicates that your boot partition is too small, you may try adding deviceinfo_create_initfs_extra="true" to your /etc/deviceinfo file. You should do this before rebooting! If this fixes the issue for you please mention so in your reply to this thread, and feel free to open a merge request to add this for your device.