Add a provider call to get device friendly name.

For now, it sends the device model name as friendly name, in lieu
of actually having a user-supplied friendly name. This is wrong
for at least two reasons:

1) We need to have an actual user-supplied friendly name, but that's
   not easy to find.
2) This really shouldn't be a provider query -- it should be something
   the Exchange can know locally (ideally this is a system preference
   but that's not currently implemented). This workaround just lets
   us have some reasonable value that we can update easily.

Bug: 11161234
Change-Id: If83ad768736de19c9d0e833d1f86a6ce9daf5039
2 files changed