linux: update to linux-3.13.6

Signed-off-by: Stephan Raue <stephan@openelec.tv>
eventlircd: use /run/lirc instead /var/run/lirc for lircs pid and socket files

Signed-off-by: Stephan Raue <stephan@openelec.tv>
projects/RPi/filesystem: move /etc/modules to /usr/lib/modules-load.d/

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