Add back some (currently unused) files lost in an earlier NuttX merge
HOTFIX: Fixed HoTT compile error, fixed MAVLink crash
Options for bus and blinkmaddress added.
Option for Bus and BlinkM address added
Merge pull request #194 from NosDE/master

Options for Bus and BlinkM address added
Merge branch 'master' of github.com:PX4/Firmware into px4io-i2c
Merge branch 'px4io-i2c' of github.com:PX4/Firmware into px4io-i2c
Merge branch 'px4io-i2c' of github.com:PX4/Firmware into px4io-i2c
Fixes to RC config transmission from Simon Wilks