firmware: MMAL: Update to latest container code

firmware: ril_top: fix for setting parameter sizes on get_parameter
Fixes issue with image_encode returning errors from openmax

vchi: Remove unimplemented vchi_exit prototype

firmware: image_fx: Ensure pending_vc_image is reset when clearing vc_image
Fixes issue when flushing image_fx

firmware: arm_display: Handle display closed without busy spinning or asserts
See: http://www.raspberrypi.org/forums/viewtopic.php?f=43&t=84889&p=603505

mmal: Plumb in OMX_IndexConfigCommonInterlace to mmal
kernel: bcm2708_fb: Implement blanking support using the mailbox property interface
See: https://github.com/raspberrypi/linux/pull/673

kernel: bcm2708-i2s: Fix check for B+ board revision to exclude flags like warranty bit
See: https://github.com/raspberrypi/linux/pull/648#issuecomment-53951192

firmware: mmal: Update to latest upstream mmal code

firmware: OV5647: Use custom_config param to allow forcing sensor mode
See: http://www.raspberrypi.org/forums/viewtopic.php?f=43&t=85714

firmware: Annotate: Add option for frame counter and black background
See: http://www.raspberrypi.org/forums/viewtopic.php?f=43&t=83353&start=75#p604737

firmware: Fix for broken passthrough with dvdplayer due to unintended dither
See: http://forum.xbmc.org/showthread.php?tid=192380&pid=1783753#pid1783753

firmware: video_encode: Allow more aspect ratios to be accepted
vdec3 can handle signalling arbirary aspect ratios with h.264, so don't limit to a set range