Merge "Silence -Wunguarded-availability" am: 8d7f7f4bdc am: 20f229f2a7 am: 8dbdfc669e

Original change: https://android-review.googlesource.com/c/platform/external/libusb/+/1556459

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ieaecf383ca63bf2a4ae0c16bf2361117743da32a