SWDEV-470612 - Add the optimized multistream path

- Added the optimized multi stream path in graph execution. It uses a fixed number of async streams in the execution
- Optimize the launch latency, where commands
creation and execution is done at the same time
- Optimize the scheduling to use less barriers and waiting signals if
the same queue  can be detected
- The new path is controlled by  DEBUG_HIP_FORCE_GRAPH_QUEUES
environment variable, where 0 will use the original path and any other
value will force the number of asynchronous queues for execution
- DEBUG_HIP_FORCE_ASYNC_QUEUE can force single queue async
execution in graphs(applicable for Navi families only)

Change-Id: I7eb40bc15c45f508d6911868a6f6d4c3598d380e

rocclr/device/rocm/rocvirtual.cpp

@@ -1384,6 +1384,9 @@ bool VirtualGPU::initPool(size_t kernarg_pool_size) {
       roc_device_.info().largeBar_) {
     kernarg_pool_base_ =
       reinterpret_cast<address>(roc_device_.deviceLocalAlloc(kernarg_pool_size_));
+    // @note Workaround first access penalty.
+    // KFD may update CPU page tables on the first CPU access
+    *kernarg_pool_base_ = 0;
   } else {
     kernarg_pool_base_ = reinterpret_cast<address>(roc_device_.hostAlloc(kernarg_pool_size_, 0,
                                                    Device::MemorySegment::kKernArg));