Update SVN to 21 for O6R4 Feb MPR 2022 am: 0d19675985 am: 4386aff0a1

Original change: https://googleplex-android-review.googlesource.com/c/device/google/raviole/+/16474561

Change-Id: I0f7342222d0f1886c6df5057d3c2112f23640d2e