Restrict enumeration of USB Audio Interfaces

Bug: 136083296
Test: build, flash, connect USB interface, examine logs
Test: No regressions for normal audio playback w/ Presonus, USB-C
Headset.

Note that since this ONLY modifies the interfaces enumerated in the
UsbHost API, it has no effect on normal, framework access to USB Audio.

Change-Id: Ib7d4c83744dfb0961360749c01b008aa9ab9baa2