Small shell script for editing the config...
Vostro 2520 config > removed realtek staging drivers, the intel module should keep all
required funcs in kernel to get broadcom-sta working
Fixed typo preventing copying to ./configs
Vostro 2520 config > Removing the realtek staging drivers results in missing symbol again.

Enabled it again and removed the intel one instead
Build script > mrproper is now optional, script need to be invoked with "clean" param