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

This fixes a few shortcomings in the boot firmware:
  - emmc pll clock issues
  - audio underruns and chirps
  - unload of sensor drivers (?)
  - missing config.txt no longer borks the boot
  - lockups during long exposures on the camera
  - YUV-to-texture fastpath for the camera

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