SWDEV-377804 - Initial commit to support hipGraphInstantiateFlagAutoFreeOnLaunch

Change-Id: I7a35becb6c98a6ff70264e141317d98be7457a37


[ROCm/clr commit: f9e27bcdd4]

projects/clr/hipamd/src/hip_mempool_impl.cpp

@@ -397,4 +397,10 @@ void MemoryPool::GetAccess(hip::Device* device, hipMemAccessFlags* flags) {
   }
 }
 
+void MemoryPool::FreeAllMemory(hip::Stream* stream) {
+  while (!busy_heap_.Allocations().empty()) {
+    FreeMemory(busy_heap_.Allocations().begin()->first, stream);
+  }
+}
+
 }