gio: cleanup

* Update cm.dependencies for 3.0 kernel
* Add lines for kernel 3.0 & ath6kl support (disabled)
* Remove code, config and properties that belong in shared config
* Remove obsolete/useless properties
* Remove obsolete wifi-related packages
* Add MMS profile for GT-S5660
* Update README.md

Change-Id: I8c8aaa2b522dae6789215f555ead2807ed38ef7b