Comment 3 for bug 1490107

for the phone we create a generic initrd.img directly from the initramfs-tools-ubuntu-touch source package, since the initramfs-tools-ubuntu-core package is directly based on the phone package just moving over the build scripts would be easy enough ... this would completely decouple the rootfs from the initrd (dropping the historically grown initramfs-tools package installation inside the rootfs will be a bit more work but bring a massive gain in rootfs size i guess)