Setting a TPM DUK on Ubuntu 24.04 fails at unpacking initramfs

[tlaurion]

Otherwise boots on x230 on master with DRK.
So #1641 specific to nv41 @alex-nitrokey @daringer @nestire

[tlaurion]

@JonathonHall-Purism what on hell is type 02214c18b266 will be subject to another PR down the path...

[JonathonHall-Purism]

It's LZ4. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/lib/decompress.c#n58

We'd need to ship an LZ4 decompressor (if we don't already), then add it to unpack_initramfs.sh: https://github.com/linuxboot/heads/blob/master/initrd/bin/unpack_initramfs.sh#L67.

[tlaurion]

Irrelevant under 24.10+ since they switched to zstd which was already supported. Added xz though, needed by debian derivatives (tested tails) on upcoming PR that will close this issue.