Merge changes from topic "cherrypicker-L17700000962261813:N11400001392188571" into main

* changes:
  Support mainline s/w codec
  AIDL BufferPool implementation (HIDL -> AIDL)
  AIDL bufferpool implementation (just copy from HIDL impl)
  bufferpool2: Support mainline s/w codec
  bufferpool2: add sync() method and etc