Used LinkAddress insteaad of InterfaceAddress

Also removed InterfaceAddress which was added
in aosp/561351 since LinkAddress is exactly same
as InterfaceAddress.

Test: Telephony sanity tests
bug: 64132030
Merged-In: Ib7965a44b307c4cff2581abf0b7c12fcb1b9526a
Change-Id: Ib7965a44b307c4cff2581abf0b7c12fcb1b9526a