Remove dependency on DhcpResults callbacks

The IpClient callbacks use DhcpResultsParcelable instead of DhcpResults.
Use a compatibility utility to convert back to DhcpResults while AOSP
wifi code still uses DhcpResults.

Bug: 149403767
Test: built, flashed, Wifi working
Merged-In: I7c525c2db01e93b3511a2dd161fdb07551677d8a
Change-Id: I0391c42811af8454fca284251d5fa71c51408ed5
3 files changed