xbmc: update to xbmc-13-a6a2713

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-bootloader: update to bcm2835-bootloader-97082b6

Signed-off-by: Stephan Raue <stephan@openelec.tv>
bcm2835-driver: update to bcm2835-driver-97082b6

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/patches/linux: update RPi kernel patch

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