SWDEV-497145 - Use rocr copyOnEngine API for staged copies

- Refactor blit code and clean ASAN instrumentation
- Use unified function for rocr copy
- Enable shader copy path for unpinned writeBuffer/readBuffer paths
- Set GPU_FORCE_BLIT_COPY_SIZE=16 which means we will use BLIT copy for
  pinned copies or unpinned H2D/D2H copies < 16KB

Change-Id: I42045cca79234b340dbf53dafb93044199736ae4


[ROCm/clr commit: 7863eb92dc]

projects/clr/rocclr/device/rocm/rocdevice.cpp

@@ -1202,7 +1202,8 @@ bool Device::populateOCLDeviceConstants() {
                                                &info_.globalMemCacheLineSize_)) {
     return false;
   }
-  assert(info_.globalMemCacheLineSize_ > 0);
+  info_.globalMemCacheLineSize_ = (info_.globalMemCacheLineSize_ != 0) ?
+                                         info_.globalMemCacheLineSize_ : 64;
 
   uint32_t cachesize[4] = {0};
   if (HSA_STATUS_SUCCESS !=