For quite some time, the tiny (4M flash) TP-Link sysupgrade and
factory images cannot be built anymore by the buildbots, just
the initramfs-kernel.bin files are still there.
Disable these images for the buildbots and prevent useless builds.
Note that these devices still build fine with default settings,
even for kernel 5.4.
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
8819faff47