Fix at86rf231 driver
Fix cc2420 driver
Fix coding conventions in cc2420 driver
fixed includes for at86rf231
Merge pull request #768 from authmillenon/fix-802-15-4-drivers

drivers: Fix IEEE 802.15.4 drivers
native: removed unreachable code
Merge pull request #779 from mehlis/native-unreachable-code

native: removed unreachable code