This patch fixes the sm90 cluster test by:
* Fixing a typo in LowerGpuOpsToNVVMOps where one of the ClusterDim Op
conversion pattern should actually be for the
ClusterDimBlocks Op. This addresses the compilation error for this test.
* The grid-size should be (4,4,1) instead of (2,2,1). This passes the
scf-if check against the threshold of 3 below and actually
generates the required prints from the GPU.
Signed-off-by: Durgadoss R <durgadossr@nvidia.com>