defconfig: kona: Enable CONFIG_DEBUG_FORCE_WEAK_CPU

CONFIG_DEBUG_FORCE_WEAK_CPU enforces desirable requirements on per_cpu
definitions by enforcing unique names for all per_cpu allocations
and detecting situations when DEFINE_PER_CPU might have been used
instead of DECLEARE_PER_CPU.

Enable the configuration option for the non-perf defconfig to catch
these situations early and often.

Change-Id: Ic0dedbad572929a572e43bfe19239beb20ba5f54
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>