Merge "Add strings for showing which side of hearing aid device is connected." into tm-dev am: 0fa04965 am: 591aa7c8

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17166626

Change-Id: I8ba4f761ad7cbf1d9e31509b22411e4646a78a23