[Misc][ROCm] Exclude `cutlass_mla_decode` for ROCm build (#17289)

Signed-off-by: Tianyuan Wu <Tianyuan.Wu@amd.com>

csrc/torch_bindings.cpp

@@ -130,13 +130,6 @@ TORCH_LIBRARY_EXPAND(TORCH_EXTENSION_NAME, ops) {
       ") -> ()");
   ops.impl("advance_step_flashinfer", torch::kCUDA, &advance_step_flashinfer);
 
-  // Compute MLA decode using cutlass.
-  ops.def(
-      "cutlass_mla_decode(Tensor! out, Tensor q_nope, Tensor q_pe,"
-      "                   Tensor kv_c_and_k_pe_cache, Tensor seq_lens,"
-      "                   Tensor page_table, float scale) -> ()");
-  ops.impl("cutlass_mla_decode", torch::kCUDA, &cutlass_mla_decode);
-
   // Layernorm
   // Apply Root Mean Square (RMS) Normalization to the input tensor.
   ops.def(
@@ -450,6 +443,13 @@ TORCH_LIBRARY_EXPAND(TORCH_EXTENSION_NAME, ops) {
   ops.def("cutlass_sparse_compress(Tensor a) -> Tensor[]");
   ops.impl("cutlass_sparse_compress", &cutlass_sparse_compress);
 
+  // CUTLASS MLA decode
+  ops.def(
+      "cutlass_mla_decode(Tensor! out, Tensor q_nope, Tensor q_pe,"
+      "                   Tensor kv_c_and_k_pe_cache, Tensor seq_lens,"
+      "                   Tensor page_table, float scale) -> ()");
+  ops.impl("cutlass_mla_decode", torch::kCUDA, &cutlass_mla_decode);
+
   // Mamba selective scan kernel
   ops.def(
       "selective_scan_fwd(Tensor! u, Tensor! delta,"