C2SoftMpeg2Dec: Initialize OUTPUT_DELAY

OUTPUT_DELAY was not initialized in c2 mpeg2 decoder plugin.

Bug: 138805938
Test: Play mpeg2 file

Change-Id: I9d5d991c7c6521bb8a2fd247984a9edd73337aed
diff --git a/media/codec2/components/mpeg2/C2SoftMpeg2Dec.cpp b/media/codec2/components/mpeg2/C2SoftMpeg2Dec.cpp
index df7b403..a1f8ff3 100644
--- a/media/codec2/components/mpeg2/C2SoftMpeg2Dec.cpp
+++ b/media/codec2/components/mpeg2/C2SoftMpeg2Dec.cpp
@@ -47,6 +47,12 @@
         noInputLatency();
         noTimeStretch();
 
+        // TODO: Proper support for reorder depth.
+        addParameter(
+                DefineParam(mActualOutputDelay, C2_PARAMKEY_OUTPUT_DELAY)
+                .withConstValue(new C2PortActualDelayTuning::output(3u))
+                .build());
+
         // TODO: output latency and reordering
 
         addParameter(