base

More QS Tile modes in the API

Allow tiles to request when they are bound instead of doing it
automatically for them when in the listening state.  Only one
of these modes is allowed for a given tile, meaning it can either
push updates when it thinks they matter, or it can be told when
to update.

Change-Id: I165b39dddb836df90d253aeb5ebea48e62ea0dae