Add capability to csr to allow N:1 aggregation when ooq is created.

- This allows applications to force the N:1 aggregation by creating out
of order queue.
- That switches csr to N:1 submission model where commands from multiple
command streams may be aggregated.
- That forces scenarios returning an event to be aggregated as well.

Change-Id: I8fd8d7f88bb2665234ee90870133120b206710a8

runtime/command_stream/command_stream_receiver.h

@@ -104,6 +104,8 @@ class CommandStreamReceiver {
 
     uint32_t peekLatestFlushedTaskCount() const { return latestFlushedTaskCount; }
 
+    void enableNTo1SubmissionModel() { this->nTo1SubmissionModelEnabled = true; }
+    bool isNTo1SubmissionModelEnabled() const { return this->nTo1SubmissionModelEnabled; }
     void overrideDispatchPolicy(DispatchMode overrideValue) { this->dispatchMode = overrideValue; }
 
     virtual void overrideMediaVFEStateDirty(bool dirty) { mediaVfeStateDirty = dirty; }
@@ -173,6 +175,7 @@ class CommandStreamReceiver {
     std::unique_ptr<OSInterface> osInterface;
     std::unique_ptr<SubmissionAggregator> submissionAggregator;
 
+    bool nTo1SubmissionModelEnabled = false;
     DispatchMode dispatchMode = DispatchMode::ImmediateDispatch;
     bool disableL3Cache = false;
     uint32_t requiredScratchSize = 0;