Merge "C2SoftVpxEnc: Move IntfImpl definition to C2SoftVpxEnc.cpp" am: f70982c797 am: 97d08be826 am: 0522097e53 am: 720c5fd240

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

Change-Id: I15a56503d61c7e9a0977318ea40fd6934926a075