Merge "codec2: Fix comment about B_FRAME." am: 1f63950e9e am: f5bc769046 am: 9b6f95fe31 am: b699d6e1c0

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1894878

Change-Id: I26413d657a6931fd665ae22712845572dfc94ed9