Enabling SMP on Danube[1] is incompatible with a patch that
adds support for interrupt handling on all cores on other
platforms[2]. This patch fixes the mentioned issue.
1. 084c20f6c5 ("lantiq: xway: kernel: enable SMP support ")
2. fbd33d6164 ("lantiq: enable interrupts on second VPEs")
Fixes: #13934Fixes: #14283
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>