Merge "libbinder_ndk: Add default constructor for SpAIBinder" am: b599a473bb am: f27ee62115 am: 451f45e478 am: 4942d959b4

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/1449267

Change-Id: Ic80e543a7e2c9c002dc992dc6edc6bcb6ae359c0