[rocm-libraries] ROCm/rocm-libraries#5383 (commit b660b8c)

[CK_TILE] Add CShuffleLds microbenchmark suite
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## Summary

Microbenchmarks isolating LDS store/load operations in CShuffleEpilogue
for bank conflict analysis.

## Motivation

CShuffleEpilogue performs LDS store (MFMA registers → LDS) and load (LDS
→ registers for coalesced global writes). This suite isolates each
operation to:
- Identify which operation causes bank conflicts
- Measure pure LDS bandwidth per access pattern
- Validate access patterns across MFMA tile sizes and wave layouts

## Components

- **Microkernels** (`tile_load_store_microkernels.hpp`):
`StoreTile<Setup>`, `LoadTile<Setup>`
- **Setup Adapters** (`benchmark_cshuffle_lds.hpp`): Wire
CShuffleEpilogue to microkernels
- **Template** (`benchmark_template.cpp.in`): Generated benchmarks with
timing

## Build

```bash
cmake -G Ninja -B build -S . \
    -DGPU_TARGETS=gfx950 \
    -DBUILD_CK_EXAMPLES=ON \
    -DBUILD_CK_TILE_CSHUFFLE_LDS_BENCHMARKS=ON

ninja -C build bench_lds_fp8_16x16x128_2x2_fp8
```

## New CMake Options

| Option | Default | Description |
|--------|---------|-------------|
| `BUILD_CK_TILE_CSHUFFLE_LDS_BENCHMARKS` | OFF | LDS microbenchmarks |
| `BUILD_CK_TILE_FMHA_TESTS` | ON | FMHA tests |
| `BUILD_CK_TILE_ENGINE` | ON | Tile engine |
| `BUILD_CK_TILE_ENGINE_TESTS` | ON | Tile engine tests |
| `BUILD_CK_EXAMPLES` | ON | Examples |
| `BUILD_CK_TUTORIALS` | ON | Tutorials |
| `BUILD_CK_DEVICE_INSTANCES` | ON | Device instances |
| `BUILD_CK_PROFILER` | ON | Profiler |

Setting guards to OFF reduces cmake configure from ~150s to ~5s.

example/ck_tile/CMakeLists.txt

@@ -33,4 +33,7 @@ add_subdirectory(41_batched_contraction)
 add_subdirectory(42_mx_gemm)
 add_subdirectory(50_sparse_attn)
 add_subdirectory(51_tile_distr_enc_reg_map)
+if(BUILD_CK_TILE_CSHUFFLE_LDS_BENCHMARKS)
+    add_subdirectory(52_cshuffle_lds)
+endif()