[llvm] [OFFLOAD][L0] Move dataFence logic to L0Queue (PR #201046)

[Nick Sarnie via llvm-commits]

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@@ -126,6 +126,15 @@ class L0CmdListManagerTy {
                       NumWaitEvents, WaitEvents);
     return Plugin::success();
   }
+
+  Error appendBarrier(ze_event_handle_t SignalEvent = nullptr,
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sarnex wrote:

can we avoid the default arguments? they are often the cause for bugs, often it's better to force the args or create seperate functions if we have totally difference call use cases

https://github.com/llvm/llvm-project/pull/201046