Split telephony into its own product, so that we can easily
add telephony support to any configuration without pulling
anything else. Use it from generic.
Split the "full" family between a (no-telephony) base,
a telephony version of the same (both of which can be used
as a starting point for on-device builds), and the true classic
full which is an emulator build.
Change-Id: I616d34f2a29415b8ec997173f8e893c312ade5c2
While the generic config is limited by its need to be inherited
by various configurations, the full config can afford some extra
settings by virtue of being essentially a "leaf" config (though
obviously it can be conbined with hardware-specific configurations
to run on specific devices).
Bug: 2533998
Change-Id: Ia95f0ce5305ada4ae6cdf69911fa9a0eeabf0900