C2SoftAacDec: Compute output port delay from stream info

Instead of hard-coding output port delay to 2, compute it
from stream info

Bug: 180567076
Test: poc in bug
Test: atest VtsHalMediaC2V1_0TargetAudioDecTest
Test: atest CtsMediaV2TestCases:CodecDecoderTest
Test: atest CtsMediaTestCases:DecoderTest
Test: atest CtsMediaTestCases:DecoderTestAacDrc
Test: atest CtsMediaTestCases:DecoderTestXheAac
Test: atest CtsMediaTestCases:DecoderTestAacFormat

Change-Id: I37d1a1f2ce0221f8b82ce4d61f8c8a09c4c55954
diff --git a/media/codec2/components/aac/C2SoftAacDec.h b/media/codec2/components/aac/C2SoftAacDec.h
index 965c29e..986187c 100644
--- a/media/codec2/components/aac/C2SoftAacDec.h
+++ b/media/codec2/components/aac/C2SoftAacDec.h
@@ -57,6 +57,7 @@
     size_t mInputBufferCount;
     size_t mOutputBufferCount;
     bool mSignalledError;
+    size_t mOutputPortDelay;
     struct Info {
         uint64_t frameIndex;
         size_t bufferSize;