When lowering reduce op, compiler will add additional CB that
will represent scaler CB needed by LLK. ScalerCB is filled by
constant according to type of reduce operation.

An idea is to leave preallocated space at the top of L1 memory for
misc usage in kernels. Scaler CB should be placed inside of this region.
Also, TTIR ops should not have context of scaler CB. It should appear
only in TTKernel dialect as additional arg when lowering reduce
operations.

ScalerCB is populated during kernel runtime, and that should be done
in NOC thread since that thread can read zeros in a burst.