fixup! Rewrite trust USB restriction handling

While using USB HAL v1.2 or earlier, one could call UsbManager's
enableUsbDataSignal(true) and it will return back true due to the USB
data status always being reported as DATA_STATUS_UNKNOWN. This ends up
breaking the logic to fallback to UsbRestrictor, since it was previously
assumed that enableUsbDataSignal() should always return false if on an
unsupported HAL version.

Instead, we should check the USB HAL version separately so that we can
use enableUsbDataSignal() only if we're on a supported HAL version. If
not, then we attempt to use UsbRestrictor instead.

Change-Id: Iddb4685d8d640d7ce223bb0ec44b0e1d5abf610b