main/postmarketos-initramfs: adjust libz path
Fix https://gitlab.com/postmarketOS/pmaports/-/issues/3183
It would be good to fix this in a generic way in postmarketos-mkinitfs, so it won't fail when the other files are moved to /usr, but let's fix this one error first, see https://gitlab.com/postmarketOS/postmarketos-mkinitfs/-/issues/42 for that.
Edited by Administrator