Declares amd-ucode and intel-ucode, the drop-in /etc/mkinitcpio.conf.d/mesh-microcode.conf, the initramfs script and mesh-kernel-initramfs.service; kernel_boot answers the running revision and whether the images were built with the drop-in. Tests: 1977/AC1-AC5. Builds: L1, L2, L3, L4, L5 (issue 1977 note 2)