Replaces the state record read (root's 0700) with images_with_microcode per /boot/initramfs-*.img:
true when the first 64 KiB hold a path under kernel/x86/microcode/; an unreadable image goes to
image_errors with its error. Test: 1977/AC5.
Builds: L6 (issue 1977 note 3)
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)
jschoubben