up to 6.30.223.141 (WEXT support is gone)

- Upgraded to support 3.8.x.
- Added 4352 support.
- Dropped WEXT support.
add support for 3.10 kernel

patch from openmamba
http://www.openmamba.org/pub/openmamba/milestone2-kernel-next/patches/broadcom-sta-6.30.223.141-kernel-3.10.patch