firmware: Fix for audio chirps over hdmi
See: http://forum.xbmc.org/showthread.php?tid=169674&pid=1560992#pid1560992

firmware: fix for emmc_pll_core combined with avoid_pwm_pll getting wrong emmc freq

firmware: alsa drop samples on stop when requested
See: https://github.com/raspberrypi/linux/issues/320

firmware: camera: fix for long exposure times causing lockup
See: https://github.com/raspberrypi/userland/issues/33
See: https://github.com/raspberrypi/userland/issues/76

userland: raspivid: Segmentation option for multiple files generated from a stream
See: https://github.com/raspberrypi/userland/pull/123