bcm2835-driver: update to bcm2835-driver-4016cb2

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-4016cb2

Signed-off-by: Stephan Raue <stephan@openelec.tv>
xbmc: add PR4491

Signed-off-by: Stephan Raue <stephan@openelec.tv>