At the moment we store the same initramfs-extra twice on the file system:
- /boot/initramfs-<flavor>-extra
- /var/cache/postmarketos-mkinitfs/initramfs-<flavor>-extra_<hash>
The second copy is exactly the same file, just with the <hash> (for caching)
appended to the filename.
We can avoid this by appending the hash directly to the filename
on the boot partition, i.e.
- /boot/initramfs-<flavor>-extra_<hash>
This is possible because we only reference initramfs-extra from the main
initramfs, and we already replace the path in it dynamically.
It will just let the main initramfs load -extra_<hash> instead of just -extra.
This saves a few megabytes of disk space on the rootfs.