[Hardware] Replace torch.cuda.synchronize() api with torch.accelerator.synchronize (#36085)

Signed-off-by: Kunshang Ji <kunshang.ji@intel.com>

benchmarks/kernels/benchmark_grouped_gemm_cutlass.py

@@ -224,7 +224,7 @@ def bench_run(
     def replay_graph(graph, num_repeats):
         for _ in range(num_repeats):
             graph.replay()
-        torch.cuda.synchronize()
+        torch.accelerator.synchronize()
 
     cutlass_stream = torch.cuda.Stream()
     cutlass_graph = torch.cuda.CUDAGraph()
@@ -239,7 +239,7 @@ def bench_run(
             topk_weights,
             topk_ids,
         )
-    torch.cuda.synchronize()
+    torch.accelerator.synchronize()
 
     triton_stream = torch.cuda.Stream()
     triton_graph = torch.cuda.CUDAGraph()
@@ -254,7 +254,7 @@ def bench_run(
             w2_scale,
             a_scale,
         )
-    torch.cuda.synchronize()
+    torch.accelerator.synchronize()
 
     min_run_time = 5
     num_warmup = 5