Merge "Allow getPsdsExtension to return nullptr" into stage-aosp-sc-ts-dev am: a5a3c1ece1 am: f95af27db6

Original change: https://googleplex-android-review.googlesource.com/c/platform/hardware/interfaces/+/15695413

Change-Id: Ie1f45543eaf2f29202d59b09ab3985ac08ccc555