add rati modules

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@5779 818b1a75-f10b-46b9-bf7c-635c3b92a50f

targets/RT/USER/init_rtai.sh

+sudo insmod /usr/realtime/modules/rtai_hal.ko 
+sudo insmod /usr/realtime/modules/rtai_sched.ko 
+sudo insmod /usr/realtime/modules/rtai_sem.ko 
+sudo insmod /usr/realtime/modules/rtai_fifos.ko 
+sudo insmod /usr/realtime/modules/rtai_mbx.ko