Merge "Add .clang-format to frameworks/av" am: e887c77709 am: d556d4060d am: 898bb8f4a0 am: 4f79af9019

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1794568

Change-Id: I3466ea8d8aa217f7c8d62c280f69a9e09ec47114