Merge "C2SoftVpxEnc: Move IntfImpl definition to C2SoftVpxEnc.cpp" am: f70982c797 am: 97d08be826 am: 0522097e53

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1822432

Change-Id: I19b249f6d1d9d7a2607c81a5b6e484e615ba4ceb