Check black-listed USB class before descriptor

Attempt to read USB descriptor of USB hub devices results in hanging
thread on getDescriptorString_native call.  Also check device
interface class/subclass as well.

Test: verified that usb host thread no longer stuch in getDescriptorString_native call on Mojave board with USB hub attached

Bug: 112657091

Change-Id: I46271dcc9c80168a650940fbde9218a54cafe8da