package/rpi-firmware: bump for misc fixes/improvements

Bring a slew of fixes and improvements to:
  - boot hang
  - camera zoom, night mode
  - MJPEG decoder/encoder
  - video decoder/encoder
  - dispmanx (3D engine)
  - documentation

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>