ARM: topology: Suppress clock-frequency error

* As per discussions over Android developer forums,
  this error can be safely ignored. There is no
  performance impact if this DT node is missing.
* Actual fix would be adding respective DT node
  for krait but this is even missing on msm-3.10
  branch where ARM topology is being used.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>