kernel: Bump kernel to 3.10.25

V4L2: Enable MPJEG encoding
See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=62364&start=75#p473486
kernel: V4L2: Correct flag settings for compressed formats
See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=62364&start=125#p479046

kernel: Fix for oops in snd-bcm2835
See: https://github.com/raspberrypi/linux/issues/478

firmware: Fix for camera failing to init due to unused vlls

firmware: MJPEG Encoder: Allocate conv image from reloc heap
See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=62364&start=125#p478922

firmware: camera: Fix for early finishing of zooming - code was only checking that width destination was being reached, not height destination. Only causes a problem if more zooming was required for height than width (i.e. different zoom factors).
See: https://github.com/raspberrypi/userland/issues/86

raspicam: Added -sn flag to set initial segment number.
See: https://github.com/raspberrypi/userland/pull/125

raspicam: colfx options not working correctly
See: https://github.com/raspberrypi/userland/pull/130
kernel: bcm2708_fb: use IRQ for DMA copies
See: https://github.com/raspberrypi/linux/pull/479

firmware: OV5647: Fix for opening the driver twice killing the first instance
See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=65215

firmware: Add second call to pvt_calibration to avoid occasional hang on start

firmware: Add config parameter to switch to timestamp fifo mode on non-monotonic timestamps
See: http://forum.stmlabs.com/showthread.php?tid=12535

firmware: Add config option to treat dts as whole frames.
See: http://forum.xbmc.org/showthread.php?tid=180161
firmware: MJPEG Encoder: Block when insufficient output buffer space
See: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=43&t=62364&start=150#p481779

hello_pi: Some minor fixes.
See: https://github.com/raspberrypi/firmware/issues/240
See: https://github.com/raspberrypi/firmware/issues/241
documentation: Update ilcomponents documentation to match latest firmware