Revert "xbmc: init takes care of reboot and shutdown"

This reverts commit 71f3f63a97dda6e6297bfad058741506ec2029a6.
xbmc: update to xbmc-13-14b7a12

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/linux: disable FIQ

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