This affects the following boards:
* dr344
* archer-c58-v1
* archer-c60-v1
* tl-wr902ac-v1
* tl-wr942n-v1
* ubnt-uap-pro
* ubnt-unifi-outdoor-plus
The build fails for any of these boards because the resulting kernel
image will not fit into the kernel partition.
When CONFIG_KERNEL_KALLSYMS is not set it could be that the kernel will
fit onto the board again, this is the case for release images.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>