I had to update the 4k alignment patch for this. While it does apply,
and the result compiles, and even appears to work fine superficially,
I do not know if there have been any changes to squashfs internals that
now require other places to take the alignment flag into account. Will
do more testing soon.
I took the patch, and applied it on top of the previous squashfs-tools
commit that we packaged (which required editing one line in the patch,
as it assumed to be applied on top of the reproducibility patches). Then
I rebased that on top of master, resolved one conflict, and I formatted
a new patch for this.
