for this to settle down to an out-of-gourt opaque agreement, Google will have to be willing to do so.
At the moment, I would be hard pressed to see Google willing to settle for anything less than Apple stopping all lawsuits in the mobile space and all future lawsuits against Android (and probably FOSS to boot)
Apple stopping all the other lawsuits will not stop the counter-suits from all those other companies, and Google is not in a position to force them to stop (and unlike Google, many of these companies have been using lawsuits as offensive weapons). Add to this the fact that Apple has been refusing the normal patent license terms (small amounts of money and cross licensing deals), and there is even less reason for all these other companies to let up on their attack against Apple.
Apple stopping all these lawsuits will be a very public action, and no matter what the opaque terms of their settlement with Google, will be seen as Apple backing off.
As a result, I don't think there is much chance for the typical "silence and cross licensing agreement" that happens between big companies.