Fix HidlUtils::deviceAddressToHalImpl for HAL V4--6

Ensure that the busAddress field is used as a fallback
for types of devices that may not necessary have it,
e.g. for built-in microphones.

Add a subset of presubmit tests for HidlUtils of V6
similar to the tests for V7.

Bug: 180143301
Test: atest android.hardware.audio.common@6.0-util_tests
Change-Id: I61fca8bd4342fdf496d1ca5bf2d01399fd3d34c7