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: Ifac59b963c6a8be3fbee09bd5b2b295ded34962f