Add a test case for async double memset
Add a test case for async double memset

Change-Id: I8a1df610c8d3d942651f258e7812e8697067c347

ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP,ROCm-Developer-Tools/HIP