Copy apple-boot firmware to EFI system partition. This enables automatic
bootloader updates on Apple Silicon computers. We rely on fw_update(8)
to place apple-boot.bin in /etc/firmware. installboot(8) will pick it
up from there and copy it to $ESP/m1n1/boot.bin, if this directory
exists. The m1n1 directory and original boot.bin are created by the
Asahi Linux installer as part of the initial UEFI environment.
The firmware package was manually tested by many.
Regress, installation and upgrade with and without apple-boot.bin tested by me.
Feedback and ok kettenis@ kn@