This device OOPs during the boot due to broken flash. It can be probably
fixed with `broken-flash-reset` once ramips is on 4.19 kernel.
So disable images for this device until its fixed.
Ref: FS#2695, PR#2483
Signed-off-by: Petr Štetiar <ynezz@true.cz>
(cherry picked from commit 28080d54d217fb4ab112e079f69462fee695dbf8)