OSX: fix readlink call
Merge pull request #1926 from mehlis/fix-readlink

OSX: fix readlink call
drivers - netdev: extend netdev_state_t enum
drivers - cc110x: Initial import of new cc110x driver
support new cc110x driver globally
sys - transceiver: make transceiver ready for new cc110x driver
boards - msbiot: prepare msbiot for new cc110x driver