REDSEA-1239 Added mettools libs.

This is a basically to merge the meta-vexpress_superfifo_vp_11_20.tar.gz file that was attached at http://confluence.alm.mentorg.com:8090/display/REDSEA/Sample+Virtual+Platform+Linux+info

I contains work done by Kathleen for adding the sfifo kernel module and also my fix for REDSEA-1239 to add mettools support