BBB rowboat build with LCD4 and USB WiFi support. Uses a 3.8 kernel.
rowboat: http://gitorious.org/rowboat
3.8 kernel: https://github.com/RobertCNelson/linux-dev
Build instructions: http://icculus.org/~hendersa/android/
Blog post with details: http://nelenkov.blogspot.com/2013/07/building-wireless-android-device.html