Android.bp: Introduce libminikin_defaults am: 35a6ffe9a6

Original change: https://android-review.googlesource.com/c/platform/frameworks/minikin/+/2310619

Change-Id: I222be5ae0fd4fcc75df0009c86347cc460687524
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>