WIP: aarch64 support

1 job for aarch64-rebase in 4 minutes and 16 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
failed #31380
img

00:04:16

 
Name Stage Failure
failed
img Test
	build/livedisk.iso.gz \
build/harddrive-efi.bin.gz \
build/livedisk-efi.iso.gz
make[1]: Entering directory '/builds/redox-os/redox'
make[1]: *** No rule to make target 'bootloader/aarch64/**', needed by 'build/bootloader'. Stop.
make[1]: Leaving directory '/builds/redox-os/redox'
make: *** [Makefile:69: ci-img] Error 2
Cleaning up file based variables
ERROR: Job failed: exit code 1