Add a getPhysicalAddress api to hdmicontrolservice.

ag/5309322

This is helpful when other services need physical address to get the
index of the port according to the physical address reported from the
device connected(not necessarily directly) to the current device.

Test: local tested.
Change-Id: I224a16166e4dabccf81dc34eb479e469c29ac3a0
4 files changed