Migrate IUsbGadget implementation to AIDL am: d6d0b7d2ca

Original change: https://android-review.googlesource.com/c/device/google/gs101/+/2361897

Change-Id: I7c4f4bf61540cc8eadd45484b72a28fada7873dc
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>