Fixing UsbDescriptorParser errors associated with video cameras.

Added framework to (eventually) parse video interface descriptors,
but at least not report errors/warnings when encountering them.

Centralizing control of logging towards making it a run-time option.

Bug: 124374863
Test: build, flash, connect USB device, pull and examine log...
run "adb shell dumpsys usb dump-descriptors -dump-list",
examine output, use device with JavaRecorder app.

Change-Id: I5d039b51c321d6ceb33a803f78e71f00908f1d69