Move AudioDeviceTypeAddr to libaudiofoundation.

Move AudioDeviceTypeAddr from AudioPolicy.h to libaudiofoundation.
AudioDeviceTypeAddr is a class that contains audio device type and
address. It can be used not only in audio policy, but also other places.

Bug: 135621476
Test: make, atest AudioHostTest
Change-Id: Ib257859891c647c07f22771012efdada438a4ff5