kernel: Add CONFIG_VETH for virtual ethernet devices
See: https://github.com/raspberrypi/linux/issues/550

kernel: V4L2: Add manual white balance control

firmware: audio_mixer: Fix bug that loses second channel with 8-bit input
See: http://forum.xbmc.org/showthread.php?tid=184866&pid=1664162#pid1664162

firmware: MMAL: Add parameter to enable SEI on the encoder.
See: https://github.com/raspberrypi/userland/issues/144

firmware: MMAL: Correct rounding for EV steps
See: https://github.com/raspberrypi/userland/issues/34

firmware: camera: Correct EXIF handling to always update
See: https://github.com/raspberrypi/userland/issues/83