Merge "usb: remove duplication in descriptor reading code." am: b612fc8f4f am: 2a4deb3988 am: 759ccebf47 am: 6b09fade5b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1954916

Change-Id: I8896c953361b3c278a3f892b3edb8ea44e36e6f3