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

This reverts commit cdb586ad1508b18e14a744b5aa4eb72788fed767.
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>