Add automatic default value for primitive type fields am: 94d3c0c503

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/tools/aidl/+/17395477

Change-Id: Ieed34354201f1d481453ca7326846895b1229dba
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>