beni: 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-S5670
* Update README.md
* Remove ALL LDPI overlay; anything that needs to be restored
  belongs in ldpi-common

Change-Id: If6b7370298a6132f9ca448af822d0df8cf879967