Merge "Declare android.hardware.radio@1.6 as system_ext module" into tm-dev am: 5c2dfc5e

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/17121557

Change-Id: I483a2e2f58ff6a6ccd14d0e358b70ed31d5db338