SpatializerHelper: fix routing check in canBeSpatialized

Fill in AudioDeviceAttributes array from ArrayList directly
when calling AudioSystem.canBeSpatialized() method.

Bug: 208931004
Test: atest SpatializerTester run on device that supports
     spatial audio, connected to audio device where
     spatialization is expected.
Change-Id: I41f9058765ee20243459af84cd40d870f26f3226